Offcept

OFFCEPT is an offensive security company that helps organizations identify and address weaknesses before attackers exploit them. Its services include multi-week red team operations, manual penetration testing, phishing and social engineering exercises, EDR and XDR testing, and continuous threat intelligence covering data breaches, dark web activity, and exposed credentials. Specialist work includes zero-day vulnerability research, reverse engineering of binaries, malware and firmware, and security testing for AI systems and large language model integrations.

OFFCEPT structures engagements around threat modelling, testing and exploitation, reporting, and remediation validation. Its operators profile realistic threats, investigate attack paths, present evidence and business impact, and work with client teams to retest fixes. The company also publishes technical research, security advisories, and anonymised case studies.

Its Attestra AI platform is an AI pentesting agent that proposes security findings. Each claim is independently replayed against a deterministic oracle before validation; findings that remain uncertain are reviewed by an operator. Specialist agents can assess an attack surface on recurring schedules.