23 Aug 2023 • 10 min read
23 Aug 2023 • 10 min read
In the ever-evolving landscape of online security, CAPTCHAs stand as a frontline defence against bot-driven attacks. However, it's essential to understand that CAPTCHAs aren't impervious walls, but rather strategic barriers that impose a toll on malicious bots. Think of CAPTCHAs as toll booths on the road of the internet, where they don't block every vehicle, but they certainly make the journey more expensive for those with ill intentions, and expensive enough to make them leave the road as early as possible.
Lately, there's been a spotlight on a study revealing bots outpacing humans in CAPTCHA solving. The truth is, CAPTCHAs aren't a silver bullet that can guarantee 100% bot prevention (as much research has found out). They serve as a hindrance that leverages economic costs to hinder the efficiency of malicious actors. These actors aim to quickly collect digital resources, but CAPTCHAs slow them down by introducing an extra step – solving various challenges. This immediately raises the time and effort required to achieve their goals.
Attackers incur costs by manually solving CAPTCHAs or using bot scripts to crack them. These costs include both time and money. Collecting CAPTCHA challenges, finding solutions, and maintaining their effectiveness demand substantial investment. Additionally, CAPTCHA farms and manual solving processes come with a price. This is where CAPTCHAs prove to be a cost-effective security measure.
When attackers realize that their expenses outweigh the potential gains from their malicious actions, they are more likely to reconsider their approach. This cost-effectiveness disrupts the equilibrium for bot operators, making their activities less profitable. While CAPTCHAs act as a forever guiding light, leading online interactions towards a safer and more secure environment.
Let's break down how GeeTest ensures attackers' costs outweigh their income, discouraging their malicious intentions.
To illustrate this, let's consider the cracking of image CAPTCHAs—a common challenge that involves deciphering images. This concept applies to various types of image-based CAPTCHAs, including reCAPTCHA's image recognition CAPTCHA and GeeTest's slide CAPTCHA.
When attackers attempt to overcome these challenges, they must ensure that their potential profits outweigh the costs involved. It's a simple equation that aligns with any business objective: Profit > income - costs.
For instance, imagine an attacker targets a set of 60,000 CAPTCHA images. With a cost of $0.0019 per image to manually solve using a CAPTCHA farm, they'd need to crack all 60,000 images before the set is updated. This means their cost would exceed $114, without accounting for other expenses.
GeeTest takes a proactive approach by generating over 50,000 new images across different categories in mere minutes. These images are updated continually, with 10,000 new ones every 10 minutes to thwart ongoing attacks. This strategy elevates attackers' costs, rendering their image-answer database obsolete within an hour. As a result, they're compelled to pay $0.0019 for each image solved manually. This effective tactic disrupts the equilibrium of bot operators and brings a halt to their attack endeavours.
Remember, this illustration focuses specifically on image-based CAPTCHAs. Yet, GeeTest offers a diverse array of CAPTCHA challenges. Our commitment to proactively securing the online landscape makes malicious attacks less enticing. As we delve further into our efforts to reshape the battle against CAPTCHA cracking, it's important to note that our range of solutions extends beyond image challenges.
Throughout eleven years, GeeTest has been on an unceasing journey of refining and upgrading its products. Driven by an unwavering pursuit of technological excellence, we have continuously evolved, ushering in successive generations of innovation. Our perspective on products, the world, and technology remains dynamic as we unveil the remarkable power and innovation woven into our state-of-the-art technology.
By integrating advanced risk assessment mechanisms, machine learning, and biometric analysis, GeeTest CAPTCHA v4 significantly raises the stakes for potential attackers. With an astounding 3.714-fold surge in attack costs, malicious actors now face the formidable task of expending substantially more resources, time, and effort to breach systems fortified by GeeTest. This substantial spike in attack expenses stands as a potent deterrent, discouraging potential attackers and steering them toward less fortified targets. The intricately designed verification mechanisms of Behavior Verification 4.0 erect a significant barrier for automated bots, substantially weakening the effectiveness of brute-force attacks, and thereby setting a higher bar for online security.
At the core of GeeTest CAPTCHA v4 lies its ingenious seven-layer defence architecture. This comprehensive security solution employs multiple tiers of defence mechanisms to safeguard websites and applications from malicious attacks. These layers encompass static resource protection, dynamic behaviour analysis, risk assessment, device fingerprinting, human-machine validation, scenario recognition, and anti-fraud strategies. These diverse technologies work in harmony, leveraging intelligent algorithms and big data analysis to detect and filter out malicious behaviours, automated scripts, and bots. They also assess user risk levels to ensure system integrity and a seamless user experience. By artfully combining these layers, GeeTest creates a robust shield capable of thwarting a wide range of potential threats.
Learn More about GeeTest's Seven-Layer Dynamic Security Strategy here.
Bots inevitably leave recognizable marks within the network, cues that GeeTest diligently detects. These cues encompass CAPTCHA farm activities, web simulators, changes in IP frequency, and more. As users initiate verification, GeeTest promptly captures and analyzes these signals to assess the risk. This real-time evaluation determines whether the visit is legitimate or requires restriction. GeeTest's ability to swiftly analyze traces of suspicious activities ensures the timely mitigation of potential threats, thereby reducing vulnerability.
CAPTCHAs stand as vigilant guardians, forming the initial line of defence. Yet, each defence poses its own challenge. This dance between protection and attack is at the heart of our series, "Bot Management 101: The Basics of CAPTCHA's Security Showdown".
Dive into the intricate tactics employed by attackers to sidestep these digital checkpoints, and witness how GeeTest, constantly evolving, bolsters these barriers. But our series delves deeper than a tactical overview; it weaves a narrative of real-world clashes that illuminate the unrelenting tug-of-war between ingenious bot creators and CAPTCHA providers. From the perspectives of attackers, targets, and defenders (us, at GeeTest), we provide a comprehensive understanding of the trials and innovations in bot management.
As we embark on this enlightening journey, we're thrilled to unveil the first instalment of the Bot Management 101 series, "CAPTCHA Harvesting", launching next week in GeeTest resources. For those eager to get a sneak peek, reach out to firstname.lastname@example.org or connect with your account manager for an exclusive preview. Together, let's navigate the path of upholding the integrity of our digital realm, ensuring that by raising the toll for attackers, our digital highways remain secure and resilient.
Subscribe to our newsletter