Achieve Continuous Compliance with Onion Security

Achieve certification. Reduce risk. Inspire trust.

We help fintechs, investment firms and startups navigate the full spectrum of compliance and certification needs. From ISO 27001 and SOC 2 to GDPR, HIPAA and emerging frameworks like ISO 42001, our consultants guide you every step of the way.

• Readiness assessments and audit preparation
• ISMS and control implementation
• Certification pathways (ISO 27001, SOC 2, etc.)
• Policy development aligned with NIST, ISO and GDPR
• Ongoing compliance oversight

Whether you're getting started or levelling up, we ensure you're audit-ready and client-confident.

Automate compliance. Show clients you mean business.

As a trusted UK Vanta partner, we guide you through the complete setup and integration of the platform, tailored to your specific frameworks. Vanta streamlines evidence collection, reduces manual effort, and accelerates your path to ISO 27001, SOC 2, and more.

• Full onboarding and configuration of the Vanta platform
• Custom integration of your controls and assets
• Creation and publishing of your Trust Centre
• Continuous monitoring and audit support
• Alignment with up to 40 compliance frameworks (e.g. HIPAA, GDPR, ISO 42001)
• Integration support with tools like Google Workspace, AWS, Microsoft Azure, GitHub, Jira and more
• Support with control testing, policy mapping, and auditor collaboration within Vanta

We don’t just set it up — we help you operationalise and scale it for long-term success.

Security leadership without the full-time cost.

Our virtual CISOs provide strategic direction and hands-on oversight to support your governance, risk and compliance maturity. Ideal for companies scaling into regulated markets.

• Named vCISO support
• Board and investor reporting
• GRC programme development
• Regulatory alignment (NIST, ISO, GDPR), with support for FCA-regulated firms

Proactive protection through expert testing.

Through our trusted UK penetration testing partners, we offer web and infrastructure assessments tailored to your risk profile. Actionable remediation and business-oriented reporting included.