Captcha VK. How to pass a captcha using human labor. Why does captcha appear on VKontakte?

The question of how to remove captcha in VK is of interest to many users who spend a lot of time in social network. A captcha that suddenly appears when trying or even logging into an account forces you to waste time recognizing and entering characters, reducing the positive impression of the entire social network. If communication is very active, the constant appearance of windows with letters that are difficult to distinguish can fray the nerves of even the most patient person. This article tells you how to avoid similar situations. However, first things first.

Attention! The VKontakte administration strictly adheres to the principles of combating spam. That is why, when it detects a suspicious user acting like a bot or spammer, the system tries to check for “reality” by asking for a captcha.

CAPTCHA is computer test, which allows you to determine whether the user is a real person or a bot. Visually, it is a small window with an encrypted combination of letters, numbers or pictures, which should be repeated in a special field. For a person, deciphering a captcha is not a particular problem, but for a computer it is almost impossible to do it.

Why does captcha appear?

If a window with a captcha appears on the screen every now and then, this means that the user repeats the same action many times. For example, he sends, sends out in bulk or posts one entry in different communities. In some cases, captcha can act as protection against users who have refused to join the group. Here you just need to become a participant, and the problem will be solved by itself.

People who send links to third-party sites on VK also encounter captcha, since such actions are more typical for spam bots.

Previously, captcha appeared for all users whose pages were not linked to a number mobile phone. They were forced to confirm every action on the social network. This problem has now been resolved, since any page is registered only if it is linked to a phone.

How to get rid of captcha

If your actions fall under the situations described above, you will have to come to terms with it and enter the required combination each time. But in cases where the user does not violate the rules of the social network, you can remove the captcha through the settings personal page. Here's a little instruction:

Here you can find information about the IP, login date, and the type of browser used. If the IP address is different from yours, it means that someone has hacked the page and is using it for their own purposes. You need to click on the “End all sessions” button, and then change your account password. This will allow you to disable the captcha and permanently get rid of the annoying inscription “Enter the code from the picture.”

How to remove captcha in VK when logging in? Many users ask this question. Let's try to understand it and offer solutions.

Captcha – protection against bots. It is usually used when committing some suspicious actions. Among them:

Visiting a page from multiple IP addresses.
Referral large quantities messages.
Adding many people as friends.
Questionable actions similar to automatic ones.
Any operations that are perceived as robotic.
Some incorrect entries password.

In all similar cases can't do without additional check. It is worth clarifying a number of factors:

Under what circumstances does the captcha appear?
How many devices are used to visit the social network.
One access point or several are used.
It is possible that a dynamic IP is being used.
Do you perform actions that are similar to automatic ones?

Captcha is a natural protection against bots. It was created on a social network to limit their activity and make it difficult to function various programs. But it's worth further exploring own actions and find probable cause using captcha against you.

What to do?

When entering VK it asks you to enter the code from the picture, how can I remove it? We cannot promise complete deliverance from it. But we are ready to offer a number of methods to combat this problem.

The first option is to stop doing repetitive actions. The system perceives a person as a program and wants to test him. Therefore, it is worth rethinking the use of the social network.

Additionally, you should check the IP addresses from which VK is visited. It's easy to do:

Go to the website.
Open the settings section.
Proceed to safety.
Open your recent logins.
The time of visit and address, browser or application type are indicated.

If the IP changes, then VK can begin to check the user and issue codes. Try to reduce the number of addresses and monitor the situation.

Clear your usage history. For some people, this option helps get rid of problems. In the future, check the functioning of the social network, whether the situation has disappeared or not.

The last way is to contact the administration. All the described methods did not help remove the captcha? Then write to technical support and tell us about the situation. Our staff will thoroughly examine the problem and propose a solution.

Incorrect password entry is one of the reasons

Why does it ask me to enter the code from the picture when I log into VK, how can I remove it? A common cause of the problem is that the password is entered incorrectly several times. The system perceives the user as a robot that selects the code. Therefore, restrictions are introduced to ensure safety.

In fact, they cannot be bypassed. If you want to access the page, then in any case you will have to enter the captcha correctly. The user has no other option, do not waste time looking for a solution.

Of course, it’s not always easy to immediately enter a captcha. But the number of attempts is huge, sooner or later you will be able to recognize the code. It is important not to be nervous, carefully study the captcha and indicate the symbols. This approach will save a lot of time.

Next time, be careful and try to enter the password for the page correctly the first time. Then you can avoid additional problems and the captcha will not appear.

Can't enter the code? Alternatively, you can exit the site, wait a little and come back again. Enter the password; if it is correct, the system will immediately allow the user to access the site.

Now you know why captcha is needed and how you can get rid of it. VK actively uses the code for protection, and it is widely used in the social network. Captcha can appear not only at login, but also while visiting various pages.

Do you do a lot of repetitive tasks? Then the system will block the user and force him to enter additional codes. This standard procedure to check security and identify bots.

Always try to enter the password the first time.
Don't perform actions that may seem automatic.
Do not send messages or outright spam.
You shouldn’t give a lot of likes and invite dozens of users as friends.

VKontakte is a well-known and very popular social network. But many users do not understand why they are regularly asked to enter a code from a picture, which is sometimes impossible to decipher.

This code is called captcha. Captcha is designed to protect the VKontakte website from bots, spammers and unscrupulous users.

How to bypass VKontakte captcha

If the captcha suddenly begins to appear too often, go to the settings of your VKontakte page

Go to the “Security” section

and click on “Show activity history”

After this, a window will appear in the browser that will show the history of visits to the VKontakte website and the IP address from which you logged in. If you see an address in the list that is different from yours, the page has probably been hacked.

In this case, click on the “End all sessions” button

After this, change your password immediately.

It is believed that the chances of a captcha appearing are less if the VKontakte page is linked to a phone number. But to do this, your number must be linked to only one page.

If no one has hacked your page, and the system still shows pop-up windows with unclear text, you can use special programs for solving captchas.

The most famous of them are anti-captcha and rucaptcha. This payable service, but it is inexpensive - for solving 1000 pictures the system will charge about 30-50 rubles (according to Rucaptcha tariffs). It is enough to register on one of the services and deposit a dollar into your account so that the captcha will stop bothering you. On these resources, real people earn money by entering captchas for a reward. And by paying for their services, you will receive a special key that will help you not bother with captcha.

Why does captcha appear on VKontakte?

To get rid of captcha, you need to understand what VK is “punishing” you for. Basically, captcha is offered to be entered by those users who perform a large number of similar actions.

It was established experimentally in which cases a captcha may appear. Now we will tell you about them.

1. Over-friending people

For example, if you decide to promote your page and visit the site every day to add friends, then every 3-5 requests the system will ask you to enter the code from the picture. This is necessary to prevent spam bots from inflating their pages. automatic mode.

2. A large number of photos added to albums

If you have your own VKontakte group, to which you upload a large number of photos every day, then you have probably already encountered a captcha while uploading photos.

3. Too many likes

If you like everything, the VKontakte website may suspect that you are trying to somehow increase their statistics. Therefore, you will be asked to enter the code from the picture.

4. Captcha can also occur when publishing posts of the same type on user walls (or groups). Everything is logical here - this is protection against spam.

5. Captcha for invitations to VK groups - if you constantly send out these invitations.

6. Captcha for invitations to VK meetings and events.

Video tutorial - Learning to bypass captcha entry:

But no matter how much the administrators of the VKontakte site fight spam messages, this does not always help. There are a large number of captcha solving services that enter it for pennies, saving users time and nerves.

To get around the difficulties with captcha, take into account the existing requirements of the VKontakte social network. If you want to increase the number of actions such as adding friends, inviting people to groups and events, consider using special software, which will automate captcha entry and save your time.

If you want to know more about making money on VKontakte, as well as other ways to make money on the Internet, go here: 50 the best ways making money online

Well, in cases where it is not possible to avoid a captcha programmatically, the CAPTCHA is entered manually using labor real people, which send this data to the attacker or solve captcha in real time thanks to the API.

So, we figured out the tools and motives of hackers. Let's now look at the most common methods of bypassing CAPTCHA, sorting them into two groups: those that are possible due to programmer errors when implementing CAPTCHA and those for which modern technologies are used.

Let's start in order, and I will try to place them in order of increasing complexity of protection against them, starting with the most primitive and ending with those for which methods of protection have not yet been invented.

To create intrigue, I will say that there are this moment there are three.

Bypassing captcha due to implementation errors

If you ask the creators of their own CAPTCHA implementations about how to bypass the captcha, they will tell you at least several ways. But the most interesting thing is that they themselves sometimes leave windows and doors in their creations for hacking.

This often happens due to the fault human factor, or rather the usual inattention during development and lack of thoroughness when testing the security of captchas.

But sometimes there is also inexperience, due to which the programmer simply was not aware of some methods of bypassing captcha at the time of development.

As I promised, in this section I will look at the most common ones, as well as ways to protect against them. And let's start, as promised, with the most primitive thing.

Bypass captcha with fixed dial tasks

At the dawn of captchas, self-written captchas were very popular as a means of fighting bots, because everyone wanted to try the new technology, and as a result, captchas were invented by everyone who was not too lazy.

In the case of using self-written captchas, in the implementation of which the developers decided not to bother with a large database of pictures, questions or other types of tasks, for a targeted automatic attack on a site with such a CAPTCHA, you just need to find out the answers manually.

Those. we go to such a site, select answers, compile a database of tasks and correct solutions, and write a bot for brute force attacks that will select suitable options.

But, fortunately, such situations in modern world You won’t be able to meet many, because... cybersecurity has since reached a very respectable level and no one is creating such primitives.

And if there are such people, then they very quickly learn from their mistakes when they lose control of their site or clients who were hacked because of such creations.

Protection: never create captchas with a set of problems, solutions to which can be selected manually. If to solve a captcha you need to solve a mathematical example or enter characters from a picture, then tasks and answers to them should be generated automatically.

Another way to protect against such automatic captcha entry is to change the name of the form field in which the answer should be entered. If the field name, for example, is always “captcha,” then it will be easier for an attacker to crack such a captcha. Its robot program will only send a request to the server script specified in HTML attribute“action” of the form containing the required captcha value.

If in this situation the captcha field name is the same all the time, then the hacker will simply use the database of the most common captcha field names, which you can compile yourself while studying various sites or download ready-made on specialized resources(I won’t list them to promote hacking).

If the field name, like the captcha task itself, is generated on the server, then no captcha name database will help. In order to use a dynamic field name, in practice the captcha is generated by one script and processed by another.

IN in this case The implementation of captcha has one significant nuance: the script that processes the correctness of its entry will need to somehow pass the name of the captcha field. This is most often done using hidden input forms, data attributes or transmitting them via cookies or session.

The key point is that you cannot pass the name directly, i.e. the captcha field is called “captcha_mysite”, and the hidden field contains the value “captcha_mysite” or “site”. It must be encrypted, and decryption must occur using the same algorithm as encryption.

Since the encryption algorithm will be stored on the server, an attacker will not be able to easily recognize it (unless he gains access to the contents of the server script).

By the way, it is enough to use a random sequence of characters instead of the field name, which in PHP language very easy to get using the uniqid() function.

Bypass captcha using sessions

If the implementation of a captcha involves storing the correct answer in a session, and the session is not created anew after each captcha is entered, then attackers can find out the session identifier and find out the encrypted value of the CAPTCHA.

Thus, they can easily select an encryption algorithm and use it for further automated brute force attacks using bots.

Also, if in the code for checking the user's response on the server the programmer does not check for emptiness of the session variable in which the user's response is transmitted, then the hacker can use a non-existent session identifier for which the variable simply will not exist.

Due to this omission, such captchas can be solved by inserting non-existent session ids and empty captcha values.

Protection: no matter how much you would like to give up using sessions to transfer captcha values, this is very high price to ensure the security of captcha from hacking. Therefore, sessions, the values of their variables and identifiers simply need to be carefully protected so that a hacker cannot use the information stored in them.

It is also worth producing all the banal, but such necessary checks variables on the existence and emptiness of their values.

Cracking captcha due to classified information in client code

Sometimes captchas are made in such a way that when transferring user values to the server, encryption is used using the so-called “salt”, i.e. adding a session ID, IP value or other unique data to the CAPTCHA value. Often this can be a simple random sequence of symbols.

And the main condition for solving a captcha is that the encrypted CAPTCHA value entered by the user matches its correct value, which was generated when opening the page and recorded in a session or other storage for further transmission to the server.

The coincidence of these values will most likely indicate that the user is a real person who entered the captcha generated during a communication session, at the end of which he solved it and from the same computer on which he first saw the captcha.

If these unique values do not match, then most likely the captcha was entered automatically by the robot.

This mechanism for protecting the site from bots is well thought out, but sometimes these secret generated values are present in the HTML code of the page, from where they can be easily read. Therefore, you can configure their automatic reading using programs and the same automatic entry when passing a captcha.

Protection: when implementing CAPTCHA yourself, you need to take into account this security gap and, if to solve the captcha it will be necessary to take into account the value of some unique identifier, then you need to make sure that it is not mentioned either in the JS or in the HTML code that can be viewed in the browser.

You also need to recreate the session ID and generate other unique values (including the CAPTCHA itself, if possible) after each attempt to enter a captcha, which will save you or at least make it more difficult for hackers to hack the site by automatic selection correct value.

Another means of protection is, if possible, to block actions by IP and number of attempts.

How to bypass captcha without changing IP

Brute force attack is effective way bypassing captcha not only in cases of its implementation with a fixed set of tasks and their solutions.

Another mistake in the implementation of CAPTCHA, which makes it vulnerable to automated attacks, is the lack of time limits for solving a captcha and the number of attempts.

In this case, you can bypass the captcha using special program, which will collect a database of questions or select answers from the existing list. Moreover, all this will be done automatically thanks to modern methods machine learning and developments in the field artificial intelligence who are for last years took a big step forward.

Protection: When implementing a truly secure captcha, you need to limit the time to answer and the number of attempts to solve the captcha from one IP to block brute-force attacks by robots.

For example, if less than 2 seconds passed between the generation of a captcha and the user’s answer, then consider such a user a robot and display a corresponding message on the screen. The text of the message should contain instructions to real users that the input should not be done so quickly (in case the person was physically able to enter the answer faster).

If it was really a person, then he will take appropriate measures, and if it is a robot, he will continue to attempt to bypass the captcha.

Such attempts should be considered incorrect, their number should be recorded in the session variable and blocked further actions for users by their IP. It would also be a good idea for such blocked addresses to issue a message to contact the administrator instead of a captcha if the blocked user was a real person.

And another effective way to combat bots is to introduce limits on certain actions on the site. For example, one registration from one IP. The main thing here is not to overplay and not reach the limits on the number of comments for one unique user.

But, in truth, these measures will not help much thanks to the existence of proxy servers.

Bypassing captcha using a proxy

Even in situations where blocking of a large number of attempts to solve a captcha by IP still occurs, this measure does not provide 100% protection from robots.

It’s all because of proxy servers and anonymizer programs that work on their basis, which perhaps every modern schoolchild knows about, looking for ways bypass parental controls and blocking of prohibited sites.

Anonymizers allow you to hide computer data when using the site, including the treasured IP address, by which the client can be identified and blocked.

The scheme is simple: the user connects to a proxy server, where his data is encrypted or replaced with others (for example, you may be assigned an IP address from another country), and then a request is made to the target site to which the client wants to connect.

Thus, an attacker can easily bypass all your IP blockings and pick up correct solution as many captchas as he needs.

And on some sites where the captcha appears only when completing a large number identical actions(for example, in VK when adding a large number of friends), it may not appear at all if each action is performed from a new IP and with timeouts between attempts to solve the captcha, so that the behavior of the bot is similar to the behavior of a real person.

This method was used half a century ago when writing the first programs to pass the Turing test, the implementation of which is CAPTCHA.

The described principles, by the way, are used by all currently known programs for automatic input captcha. To change the IP address of connecting to a site, they use free and commercial databases of proxy servers, which are not difficult to obtain if you have the Internet.

Protection: Unfortunately, there is no way to protect yourself from captcha hacking by tracking attackers by IP, thanks to the presence of anonymizers and open PROXY databases.

The only hope is that you PROXY servers may impose restrictions on the number of IPs used by one user and the number of connections from each of them.

For this reason, you should not abandon IP verification altogether. Thanks to your precautions that protect against captcha bypass, you will be able to block the hacker at one level or another sooner or later.

And most correct conclusion in this situation, in addition to this method of protecting against captcha hacking, there will be others that will help expose the hacker in another way.

Entering captcha automatically using action emulators

If for passing CAPTCHA needs to be produced specific action(clicking a button, moving a slider, etc.), then you can also bypass the captcha in this situation by emulating the necessary action (click on specific element control or other action).

The only problem that a hacker may face in this situation is how to find the desired control on the site programmatically.

The easiest way to do this is by its coordinates or position relative to some static elements of the resource.

Protection: To protect yourself from automatic captcha entry in this case, you must constantly change the position of the control element that allows you to solve the CAPTCHA. Those. If out of three people you need to choose only the one whose hand is raised, in no case should he be placed constantly in the same place.

Well, in cases of other captcha implementations, when this is not possible (for example, for a download button or the “I’m not a robot” field, which can only have one correct answer), it is necessary to use other protection methods that can stop robots from automatic solution captcha.

How to bypass captcha using high technology

We have looked at the weak points of CAPTCHA implementations, which are security holes and are the most common in practice. However, in practice, even the most impeccable captchas are sometimes unable to protect the resource that uses them from hacker attacks.

These cases of captcha hacking are a direct consequence of modern progress and level of development computer technology, which, as we know, are not always used for good purposes.

So, how to avoid captcha using modern technologies?

Bypass captcha using OCR

OCR (Optical Character Recognition - optical recognition characters) is a technology for recognizing printed or typewritten text for its further use in electronic format. The most famous software that implements this technology is Adobe FineReader.

It is successfully used in creating automatic captcha entry programs that successfully recognize and solve graphic captchas, to complete which you need to enter the sequence of characters shown in the picture.

Hackers, of course, do not use Adobe FineReader (although maybe there are some 🙂), but write special scripts that, using various ready-made libraries for working with images or using the capabilities of the language for working with graphics, recognize captcha and produce a character sequence, depicted on it.

I found a sufficient number of examples of such scripts on the Internet. The principle of their work was as follows:

cleaning the image used in graphic CAPTCHAs from various noises;
splitting the displayed string into individual characters;
comparison of each of them with a prepared picture (sample).

Graphic samples were prepared taking into account different fonts and possible distortions (tilts, rotations, etc.).

As you may have guessed, the most important thing is to compile a database of symbol images in various variations, with which captcha symbols will then be compared.

Protection: in fact, in order to confuse OCR programs, annoying noises and distortions of characters in pictures are used, because of which the text is sometimes difficult to understand even for a person. But, in the case of robots, this also works well, as a result of which OCR algorithms cannot produce a 100% accurate result, which has a positive effect on the security of captcha and the sites that use it.

If you decide to use graphic captchas, for which you need to enter the characters shown in the picture, then you need to follow the following recommendations:

Symbols on different CAPTCHAs must have different coordinates.
If you use any noise effects to create a background, then its color must match the color of the characters, otherwise the background can be easily removed by highlighting the characters for recognition.
The distance between characters should be minimal. You can even overlay them on top of each other, but only without fanaticism, so that real users can recognize them.
Use different fonts to make it difficult to choose the right one for recognition.
Distort characters in every possible way, change their style and thickness.
Use special libraries, allowing you to change characters in such a way that it will be impossible to select a font for their software recognition. An example of such a solution is a captcha from the creator of the resource captcha.ru, which is generated using the author’s wave-like symbol distortion algorithm.

All these measures make it possible to complicate the recognition of graphic captcha for OCR systems and reduce the number of automatic captcha entries.

How to pass a captcha using neural networks

If OCR is a fairly old technology (the first patented devices were known at the beginning of the 20th century), then artificial neural networks (ANNs) appeared only in the second half of the previous century (50 years is a significant age for technologies :)).

It is ANN algorithms that underlie artificial intelligence (AI), the goal of which is to create programs and devices endowed with creative functions, i.e. creation of man-made man.

At the moment, AI is constantly developing, and every day new inventions appear that have previously unseen properties.

At the last conference on neural networks that I attended, it was reported that Google, which is actively involved in developments in this area, has already announced publicly available cloud services, working on the basis of ANN.

Using them you can:

recognize objects in photographs (from the gender of the person depicted and the brand of his jeans to what game the analyzed picture belongs to, from all its color palette, the name of the location and what is happening there);
control devices with voice and gestures;
write annotations for videos based on what happens in the video, etc.

Naturally, with these capabilities, creating a program for automatically entering captcha using ANN principles is not difficult for knowledgeable people.

One such product was developed by Vicarious in 2014. Designed by her neural network is able to recognize captcha in 90% of cases (let me remind you that to solve the classic Turing test, which is CAPTCHA, only 1% of correct answers are needed).

Protection: Unfortunately, it is impossible to protect against this type of attack. And fortunately, ANN from Vicarious will not be used for targeted attacks to bypass captcha on websites, because... it's too expensive for those small tasks(the manufacturers themselves say that it is a cluster of many servers). Its main area of application is the solution various tasks medicine and robotics.

And cracking captcha with its help is just a demonstration of its capabilities.

But time passes, technologies that were expensive just yesterday are becoming cheaper, and the time is not far off when ANN products will become widespread. Therefore, it is quite possible that in the future there will be bots for automatically entering captchas, equipped with artificial intelligence.

Bypass captcha using public services

As the OCR systems and AI measures for complicating graphical captchas became more and more complex, which allowed their developers to make enormous efforts during implementation. But they still turned out to be futile, because... they did not provide 100% protection for sites against automated attacks.

Therefore, Google took, it seems to me, the right path and decided to simply invent new standard noCAPTCHA by opting out manual entry symbols from pictures.

When developing reCAPTCHA noCAPTCHA, we used the experience of fighting robots in the era of the birth of captcha and modern developments in the field of artificial intelligence, which allows us to ensure the proper level of site security, but also not to make life too difficult for Internet users.

But despite the fact that this standard appeared quite recently, in 2015, a way to automatically solve it has already been found. And it does not lie in the use of artificial intelligence.

Everything is much more banal - for passing Google reCAPTCHA It’s enough to use Google’s own image and speech recognition services.

Image recognition in the case of reCAPTCHA v2 (the same noCAPTCHA) is unlikely to help, because at graphic tasks you need to select images that contain the necessary objects, and not enter the depicted symbols, as was the case in the previous version.

And here are the services Google service Speech Recognition, which is one of Google's achievements in the field of artificial intelligence, which was mentioned in previous method bypassing captcha will be very useful. Since the service provides an API, creating an application based on it is not difficult.

Protection: Unfortunately, in this situation, as in the previous one, where ANNs were used to bypass the captcha, it will not be possible to protect against captcha bypass. The only one positive thing again is the relative availability of suitable services, because Google only gives you a $300 trial to use them.

After their completion, the services become paid. But this is unlikely to be a hindrance for hackers, because... They can earn even more from attacks that use automatic captcha entry.

So, in the case of using speech and image recognition services to crack captcha, the only hope remains is the vigilance of their administration, which can block the account if it discovers that it is being used exclusively for the described purposes.

How to pass a captcha using human labor

To complete the list of ways to bypass captcha, I decided to consider one that does not fit into any of the categories listed above.

It is not based on exploiting the vulnerabilities of CAPTCHA implementations and the use of modern technologies, but is based on the natural human desire to make money.

And at the same time, this method helps to crack a captcha of any complexity in 100% of cases and, moreover, to do it without much financial, physical and moral effort.

We are talking about one of the modern methods money extraction - which, by the way, appeared around the time when CAPTCHA became difficult to recognize programmatically.

Its essence is that it is created special service, which supposedly allows people to earn money (mostly small ones, which may be enough only for Indians or schoolchildren who are looking for any way to get money) by manually solving captchas.

And anyone who needs their solutions can provide these captchas.

Basically, these are hackers who use the answers real users for your own selfish purposes:

automation of earnings;
sending spam;
buying tickets and goods in online stores for more expensive resale;
website hacking, etc.

For more convenient process the services even provide an API, thanks to which captcha can be completed online. Those. the user enters a captcha through the service, and at this time his answer is used to confirm the online purchase.

Many craftsmen in the field of programming, by the way, can use human labor absolutely free of charge. For example, this is how owners of porn sites, file sharing services, torrents and other dubious resources that provide free services earn their living.

They supposedly provide users with valuable content for free, requiring us to confirm that you are a person and not a robot, with the help of which attackers use their products for their own purposes.

Naturally, we don’t think for a long time, because... getting the opportunity to download the long-awaited movie in HD quality absolutely free by checking some box in the “I’m not a robot” box is just a trifle. Meanwhile, your API action is used to bypass captcha on another third-party site.

Hence the moral: always remember that free cheese only in a mousetrap and nothing is free.

Protection: unfortunately, today this is the most effective method bypass captcha, against which there is no means of protection. And it won’t be until those who want to earn pennies through hard labor and amateurs are gone free content, i.e., most likely - never.

Bypassing captcha - conclusions

While writing this article, I came to the conclusion that captcha, despite great idea, with which it was conceived, namely, protecting sites from robots, has long ceased to fulfill its functions.

If from automated captcha bypasses using weak spots CAPTCHA implementations can still be protected by eliminating all problems with their security, but it is simply impossible to protect yourself from entering captchas by real users for money.

In this whole situation, the only thing that saves is that this kind the job pays ridiculous money and few people agree to it, so the scale of cyber attacks using automatic captcha entry is not as catastrophic as it could be.

Also, “invincible” methods of bypassing captcha include artificial intelligence technologies, which have been actively developing in recent years.

At the same time, in order to make life more difficult for hackers, captchas are constantly “inflated” with new functionality, which makes completing them a difficult and tedious task even for real site users.

Remember the same Google reCAPTCHA: check the box, if Google doesn’t like something, select it again necessary pictures(With road signs By the way, I still have problems, because... I can complete this task in about 5 attempts). Is it a lot of hassle to leave a comment or register on the site? It’s easier to find another resource...

But, despite these precautions, captcha currently cannot be called an ideal way to protect against robots, for which many people criticize it and are trying to look for alternatives.

At the same time, the fact that CAPTCHA continues to be used as a cyber defense technology and is constantly evolving, including by Google, which will not invest money in dubious projects, suggests that this technology will exist for a long time.

Therefore, when developing and supporting existing sites that use captcha, it is necessary to actively use the recommendations outlined in order to make life as difficult as possible for hackers to hack their software.

And don’t forget to share your thoughts about existing methods bypass captchas and measures to protect against them in the comments under the article :)

P.S.: if you need a website or need to make changes to an existing one, but there is no time or desire for this, I can offer my services.
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