{"id":996976,"date":"2020-04-21T15:25:00","date_gmt":"2020-04-21T07:25:00","guid":{"rendered":"https:\/\/geetests.com\/article\/advanced-captcha"},"modified":"2025-09-15T14:36:47","modified_gmt":"2025-09-15T06:36:47","slug":"advanced-captcha","status":"publish","type":"post","link":"\/en\/article\/advanced-captcha","title":{"rendered":"What is Advanced CAPTCHA? How it Works?"},"content":{"rendered":"
Advancing computer technologies such as optical character recognition and artificial intelligence, have made simple challenge-based CAPTCHA systems obsolete. To defend the internet from increasingly sophisticated bot attacks from <\/span>CAPTCHA hacking<\/u><\/a>, advanced CAPTCHAs were born!<\/span><\/p>\n

What is Advanced CAPTCHA?<\/strong><\/h2>\n

Advanced CAPTCHA is an anti-bot program that distinguishes itself from regular <\/span>CAPTCHAs<\/u><\/a> by utilizing a risk analysis engine -often based on behavioral analysis- over or within its challenge-response mechanism. This has changed the logic behind CAPTCHAs fundamentally.<\/span><\/p>\n

While the legacy captcha systems ensured security with the difficulty of the challenge response, advanced captchas focused on behavioral characteristics of the traffic instead, providing higher security with less user friction<\/span><\/p>\n

First Advanced CAPTCHA appeared in 2012 with <\/span>GeeTest‘<\/span>s Slide CAPTCHA<\/u><\/a> which used biometric tracking to distinguish non-human behavior within the traffic. This new technology allowed Geetest to quickly gain market dominance within the bot management industry in China, surpassing competitors like the tech giants Tencent and Alibaba. In 2020, GeeTest took up over 60% of the Chinese bot management market.<\/span><\/p>\n

In 2014, <\/span>Google implemented behavioral analysis<\/u><\/a> into ReCaptcha v2, effectively turning it into an Advanced CAPTCHA, which led to the wide adoption of the technology internationally.<\/span><\/p>\n

In 2021, GeeTest launched the <\/span>4th generation Adaptive CAPTCHA<\/u><\/a>. It has been enhanced by active and dynamic security strategies to ensure both ease of use and security in every interaction. With 4374 security strategies per cycle and 7-layer dynamic protection, GeeTest Adaptive CAPTCHA increases the cost of cyber attackers by 3.714 times.<\/span><\/p>\n

How Advanced CAPTCHA Works?<\/strong><\/h2>\n

Advanced CAPTCHA analyzes the behavioral and environmental factors to find non-human features within online traffic. If the risk analysis engine cannot ensure the user is human or a bot, then the suspicious traffic goes through a challenge-response mechanism.\u00a0<\/span><\/p>\n

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The risk analysis engine helps to reduce the friction for some users while at the same time, it can detect and block automation or captcha hacking tools directly. When there is not enough evidence to make a precise judgment, the challenge-response comes to collect further evidence.<\/span><\/p>\n

More sophisticated systems such as GeeTest CAPTCHA will embed behavioral analysis within the challenge-response mechanism to increase its security and reduce the friction of the challenges.<\/span><\/p>\n

How Advanced CAPTCHAs Relate to Artificial Intelligence?<\/strong><\/h2>\n

The back-end risk analysis based on behavioral factors within a confined space, as well as environmental factors such as device reputation, hardware specifications, etc., is utilized to distinguish genuine human behavior from automated human behavior. AI-powered bots can mimic human behavior, and AI-powered CAPTCHA is a necessity to stop advanced bot threats.<\/span><\/p>\n

There are two aspects of advanced CAPTCHA that benefit AI technology.<\/span><\/p>\n

Machine Learning Algorithm<\/strong><\/h3>\n

Firstly, CAPTCHA is a great way to feed data into machine learning algorithms, which is crucial for its effectiveness. Industry experts hail machine learning as <\/span>the most promising solution<\/u><\/a> against automated threats.<\/span><\/p>\n

Let’s take image recognition as an example. A stop sign is a red octagon with white letters reading STOP, and it can be identified by computer programs reasonably easily. However, the stop sign within a picture can look very different depending on the angle of the photo, the lighting, the weather, etc.<\/span><\/p>\n

If we can feed millions of real-world pictures of stop signs into a machine learning algorithm, it can become very accurate at identifying stop signs within an image. However, marking millions of real-world images that include stop signs to feed the algorithms would require immense amounts of human labor. Or one could put all those images into a 3×3 matrix and ask people to select the ones that include a stop sign. Google has been training its image recognition algorithm through ReCAPTCHA for many years now, and even though the system has been successful at labeling large amounts of images, it has severe flaws as an anti-bot solution due to the high user friction it creates.<\/span><\/p>\n

Role within the Cybersecurity Environment.<\/strong><\/h3>\n

The second aspect of CAPTCHA that benefits AI technology is its role within the cybersecurity environment.<\/span><\/p>\n

CAPTCHA was invented in the cybersecurity field to tell humans and bots apart using hard AI problems such as character or image recognition. Cybersecurity is a cat-and-mouse game between attackers and defenders where both sides try to best each other constantly. When CAPTCHA is deployed as a tool on the side of defenders, the only way for attackers to bypass CAPTCHA is through sophisticated solutions that will give automated computer programs the ability to be more human-like.<\/span><\/p>\n

Especially today, where advanced CAPTCHA solutions utilize AI in their defenses in one way or another, every time a CAPTCHA solution has been breached, it likely means a computer program is more human-like and AI technology moves a step further.<\/span><\/p>\n

Which Websites Should Use Advanced CAPTCHA?<\/strong><\/h2>\n

Advanced CAPTCHA is a business imperative, not an IT imperative.<\/span><\/p>\n

Although any website with a sensitive login or registration module should use a CAPTCHA, six industries benefit significantly more from an advanced CAPTCHA solution.<\/span><\/p>\n