Login and sign up protection
Credential stuffing floods login endpoints with attempts, low-friction challenge verifies suspicious clients before authentication
Invisible bot
challenge at the edge
HotWall verifies suspicious requests with proof-of-work, JS and behavioral challenges - visible captcha only when attack volume requires it
Challenge layer scenarios
Selective verification during bot attacks, login abuse and traffic spikes
Checkout and payment flows
Card-testing bots flood checkout during peak sales, behavioral challenge blocks bot submissions while real customers purchase
DDoS and L7 attack mitigation
During volumetric and app-layer attacks, challenge layer filters scripted floods at edge, escalating to visible captcha if volume persists
API endpoint protection
Public/authenticated API endpoints face automated abuse, PoW and JS challenges verify client legitimacy before requests reach origin
Always-on captchas punish real users
Traditional captcha widgets add friction to every visit - slowing checkout, login and signup for legitimate customers. Effective bot defense should challenge only suspicious traffic, not the entire audience
Visible captcha on every page load increases bounce rates and cart abandonment
Invisible checks keep normal users moving without friction
Sophisticated bots are able to solve classic captcha puzzles
Behavioral and risk-based challenges detect automation beyond image tests
Large attacks require stronger verification without manual reconfiguration
Adaptive escalation moves from invisible checks to visible captcha when needed
What you get with HotWall Challenge Layer
Invisible verification by default, escalation when attacks intensify
Proof-of-work challenge
Suspicious clients perform a short computational check in the background - no user interaction, no page redirect
JS challenge
A lightweight JavaScript validation confirms a real browser environment - headless and scripted clients fail silently
Behavioral challenge
Session behavior, interaction timing and navigation patterns verify human activity without interrupting the user flow
Selective application
Challenges trigger only on suspicious traffic flagged by bot scoring or security rules - trusted visitors never see a challenge
Visible captcha fallback
When attack volume exceeds low-friction thresholds, the policy escalates to visible captcha for clients that fail repeated checks
Session tokens
Successful challenges issue short-lived session tokens - verified clients are not re-challenged on every subsequent request
How the HotWall challenge layer works
Challenges apply only to suspicious traffic - with a clear escalation path when attack volume increases