Invisible Challenges

How PerimeterX detects and blocks bots and attackers without the end user seeing the challenge

As an integral part of Bot-Defender, PerimeterX operates invisible challenges (also known as Proof of Work and crypto challenges), allowing us to detect and block attackers with little impact on actual users.
These challenges usually contain the following characteristics:

  • Harder to be reverse engineered
  • Detecting advanced attacks
  • Detecting spoofing (e.g. gen3 bots, trying to mask themselves as primitive bots)
  • Forcing attackers to expend more CPU time thereby negatively impacting the ROI of the attack and deterring it

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