What Is Common Criteria EAL 4+? Why It Matters When Choosing Enterprise Data Erasure Software

What Is Common Criteria EAL 4+? Why It Matters When Choosing Enterprise Data Erasure Software When evaluating data erasure software for enterprise deployment, procurement teams and security architects encounter a range of certification claims — NIST-tested, ADISA certified, DoD-aligned. Among these, Common Criteria EAL 4+ stands apart. It is not a vendor self-assessment or an industry body endorsement. It is an internationally recognised, government-grade security evaluation conducted by an accredited independent laboratory. Understanding what common criteria eal 4 data erasure certification actually means — and why it matters for enterprise tool selection — is essential for CISOs, IT procurement leads, and government IT buyers making high-stakes decisions. What Is Common Criteria? Common Criteria (formally ISO/IEC 15408) is an international framework for evaluating the security properties of IT products. It was developed collaboratively by security agencies across multiple nations and is formally recognised by governments in over 30 countries through the Common Criteria Recognition Arrangement (CCRA). Products evaluated under Common Criteria are assessed against a defined Security Target by an accredited testing laboratory, with results reviewed and certified by a national certification body. The evaluation is not a checklist exercise — it involves structured testing, vulnerability analysis, and documented evidence that the product performs as claimed under adversarial conditions. What Does EAL 4+ Mean? The Evaluation Assurance Level (EAL) is a numerical rating from 1 to 7 that describes the rigour and depth of the evaluation. EAL 4+ is the highest level routinely achievable for commercial products and is the benchmark used by government procurement programmes in the UK, US, EU, Australia, and other CCRA member states. EAL 4+ certification explained: at this level, the product has been methodically designed, tested, and reviewed. The developer must provide a complete design specification, independent vulnerability analysis is performed, and the product must demonstrate resistance to attackers with moderate attack potential. The "+" in EAL 4+ indicates that the evaluation includes one or more augmentations beyond the base EAL 4 requirements — typically additional vulnerability analysis. Why EAL 4+ Matters for Data Erasure Software Data erasure is a security-critical function. When an enterprise retires a device, the erasure software is the last control standing between sensitive data and an adversary with physical access to that hardware. If the software fails — through a flaw in its overwrite logic, its algorithm implementation, or its certificate generation — the data residue risk is real and the audit trail is broken. Common criteria certified erasure software has been independently verified to perform its security functions correctly and reliably. That verification is documented, reproducible, and recognised by the same government agencies that mandate secure disposal standards. For government IT buyers operating under procurement requirements that specify EAL 4+ as a baseline, is among a very small number of commercially available erasure platforms that meets this threshold. For enterprise security certification in regulated industries — defence contractors, financial institutions, healthcare providers — EAL 4+ provides the independent assurance that internal vendor audits cannot. How EAL 4+ Relates to Other Standards EAL 4+ certification is complementary to, not a replacement for, or DoD 5220.22-M alignment. NIST and DoD standards specify the erasure methods and procedures that must be followed. Common Criteria certifies that the software correctly implements those methods. The combination — certified methods, independently verified implementation — is what enterprise security architects should require when selecting erasure tooling for high-assurance environments. D-Secure holds Common Criteria EAL 4+ certification and is aligned with NIST 800-88, DoD 5220.22-M, and Government Compliance frameworks, providing the complete assurance stack that procurement and security teams need. Request a Certified Enterprise Demo See D-Secure's Common Criteria EAL 4+ certified erasure in action. Request a certified enterprise demo and review the evaluation documentation with your security or procurement team.