Earlier this month, Google announced a shift from traditional disk erasure to encryption-based media sanitization, a process that destroys encryption keys to make data inaccessible. While this marks progress in data protection, it also highlights an important distinction: “Encryption hides data. Certified data erasure removes it, permanently.”

Understanding the Difference

Encryption-based sanitization (or “crypto erase”) ensures that encrypted data can no longer be accessed without the key. It’s fast and efficient, especially for large-scale environments. However, while the data is no longer accessible, it still physically exists on the device, hidden through cryptographic techniques.

Certified data erasure, by contrast, overwrites every addressable area of the storage medium, guaranteeing complete and permanent removal. It provides verifiable proof of compliance with the world’s highest security standards.

The Certus Software Standard

At Certus Software, we believe true data security means leaving nothing behind. Our certified erasure solution ensures irreversible, auditable, and compliant data removal, going far beyond key destruction.

We support over 45 erasure methods, including:

• NIST SP 800-88 (Clear & Purge)
• IEEE 2883-2022 (Clear & Purge)
• US DoD 5220.22-M / ECE
• British HMG IS5, BSI-GSE, NSA 130-2, and more

These standards deliver certified proof of erasure, protecting organizations from breaches, privacy violations, and reputational risk.

Why Certified Erasure Still Matters

Encryption-based sanitization is valuable, but it should complement, not replace, certified erasure. For sensitive or regulated data, organizations must be able to prove permanent deletion, not just key destruction. That’s why at Certus Software, we continue to innovate, combining flexibility, automation, and compliance to make data erasure simpler, smarter, and absolutely final.

The Future Is Clear

As technology leaders like Google redefine data deletion, one truth remains: Only certified data erasure provides absolute certainty that data is gone, permanently. At Certus Software, we make that certainty accessible to every organization, helping you protect privacy, support sustainability, and securely give your devices a second life.