Offensive SecurityA Partnership in Co-Defense with COFFSec
COFFSec is a Hong Kong cybersecurity consultancy and research collective dedicated to creating a safer digital world. We aim for real-world impact that scales. Our cutting-edge security consulting and innovative research for global technology partners directly influence people, processes, and technologies helping to safeguard the digital lives of billions.
HoldsOSCE3BSCPCRTMOSIRAPISec
3+
CTF Wins
13+
Certifications
19+
CVEs Disclosed
recon — coffsec
$nmap -sV --script vuln target.com
>Discovered open port 443/tcp
>CVE-2026-XXXX vulnerability found
$generating pentest report...
>
19+ CVEs
Disclosed
13+ Certifications
BSCP · CRTM · OSIR · OSCE3
Services
Core Services
Comprehensive security assessments tailored to your organization's needs
Our Team
Security professionals with proven track records
Certifications
BSCPCRTPCRTECRTMOSCPOSEPOSWEOSIROSEDOSCE3CRTOAPI PentestingCPSA
3+
CTF Wins
13+
Certs
19+
CVEs
Achievements
Cyber Elite Training & Attack-Defense Competition 2024
CTF Competition Winner
Hong Kong Cyber Security Attack & Defense Drill 2024
CTF Competition Winner
PwC's HackaDay 2021
CTF Competition Winner
Get in Touch
Ready to Secure Your Organization?
Let's discuss how our offensive security services can identify and eliminate vulnerabilities before attackers do.
24/7 Response
Confidential Assessment
Certified Experts