
Elite Investment Banking Monitoring and Privacy Defense for High-Profile businesses. Eliminate exposure, control your clients data, stop authentication forgery and remote code execution before attackers empty your business logic, money and business legacy.
✅ Mass subdomain enumeration (Assetfinder, Subfinder, Amass, crt.sh, Chaos)
✅ Live host verification & prioritised target selection
✅ Full-port TCP scanning + precise service fingerprinting
✅ 2000+ RCE/SSRF/LFI/SQLi/XSS/SSTI templates
✅ Parameter fuzzing & prototype pollution testing
✅ CORS misconfigs + JWT/session token validation
✅ Hidden admin panels & authentication bypass checks
✅ Credential stuffing from breach databases
✅ Privilege escalation & system hardening gap analysis
✅ Lateral movement via legacy SMB/FTP/SMTP services
✅ Data exfiltration simulation & detection testing
✅ Risk-ranked findings with PoC screenshots/video
✅ CVSS scoring + business/regulatory impact (MNPI, FCA/SEC)
✅ 72 h / 7 day / 30 day remediation roadmap
Onyx Offensive International provides elite breach prevention for high-stakes enterprise sectors, including Banking, Oil & Gas, Critical Infrastructure, and Healthcare. Wraith20, penetration 20 step and COBOL Catalyst is a dual-vector penetration testing, Onyx bridges the gap between modern cloud perimeters and heritage legacy systems like COBOL mainframes. By delivering cryptographic proof of structural hardening, Onyx empowers organizations to eliminate multi-million dollar data exposure liabilities and aggressively drive down cyber insurance overhead before renewal.
![[headshot] image of customer (for a mosque)](https://cdn.prod.website-files.com/68ce63b5df9fe9f0aa3368b3/68ce67202e3d642e14693e04_ce8c4139-c32e-4f74-953b-efc8391b180a.avif)
Onyx Offensive removed my data from dozens of sites. Their expertise gave me true peace of mind.
![[headshot] image of customer (for a trucking company)](https://cdn.prod.website-files.com/68ce63b5df9fe9f0aa3368b3/68ce6720ba3b85044ababbe7_90a067fc-45f1-4a4b-8350-0d01dd95f70e.avif)
Discreet, thorough, and effective. I trust their process to keep my information secure.
![[headshot] image of customer (for a plumbing service)](https://cdn.prod.website-files.com/68ce63b5df9fe9f0aa3368b3/68ce672251fdac4be73aa606_3f535c74-7d87-4896-a93a-273e2ea19ba9.avif)
Their Dual-Vector Penetration Testing approach uncovered risks our heritage business never expected. Professional and confidential.
![[headshot] image of customer (for a general contractor)](https://cdn.prod.website-files.com/68ce63b5df9fe9f0aa3368b3/68ce6722ecf408940f05aea6_63e47e44-c5eb-4740-a124-73e52bfcef5d.avif)
Essential for anyone serious about privacy. The team’s attention to detail is unmatched.
Custom solutions for organizations.
Pricing
20-phase external recon (€5k)-pure NDA-bound.
Or extended active pentest (€20k)-we go as deep as you let us, all pre-approved, no data leaves without consent.
We hack you legally, walk you through every hole, then seal it for good-no surprises, full NDA, zero data leaves unless you say.
Designed exclusively for high-stakes enterprises within Banking, Finance, Oil & Gas, and Healthcare, Onyx Offensive specializes in proactive cybersecurity breach prevention that transforms risk management into a measurable financial return.