What is CAPTCHA Farm?
A CAPTCHA farm is a service that solves challenges in bulk, either with cheap human labor or vision models, so bots can get past challenge pages at scale.
How it works
The bot forwards the challenge image to the farm, a worker or model solves it in seconds, and the answer goes back into the bot's session.
Why it matters for online assessment
Challenges alone no longer stop determined automation; they add friction for real users while farms route around them. For your assessments, that means the value of your scores stay protected and candidates get a fair experience.
How ExamFence detects it
ExamFence scores every request against behavioral, network, and device signals, so automated patterns surface even when they imitate real candidates. Suspicious sessions get challenged or blocked before they reach your assessments.