Synack vs. AppSec Labs

Synack is a continuous penetration testing platform that combines agentic AI with a global network of vetted security researchers to uncover real, exploitable vulnerabilities across the entire attack surface. Most organizations test only a fraction of what matters. Synack closes that coverage gap—using AI to scale discovery and human expertise to validate real risk.

AppSec Labs is an application security company that does one thing: penetration testing of software-based systems — web applications, REST and GraphQL APIs, mobile apps, and the AI features increasingly built into them. We are software engineers who specialise in attacking software, which is why we find the flaws that require understanding a system rather than scanning it: broken authorization, multi-tenant isolation failures, business logic and workflow abuse. Testing is human-led, accelerated by our own platform, CybeRapid.