--- title: "What we are not claiming · DuplicateDuster" description: "The limits, stated plainly, and where the implementation detail is written down." url: "https://royalsoftworks.com/products/duplicate-duster/security/not-claiming/" source: "https://royalsoftworks.com" format: "markdown" note: "Markdown rendering of the HTML page at `url`. Same content, same canonical URL." --- Security & privacy · 3 of 3 # What we are not claiming. The limits, stated plainly, and where the implementation detail is written down. Stated plainly ## What we are not claiming. ### Not a certified military standard This is a genuine three-pass overwrite, not a certified DoD 5220.22-M implementation. If a compliance requirement specifically demands that certification, verify it independently before relying on this feature to satisfy it. ### SSDs limit what overwriting can guarantee On solid-state drives, wear levelling and copy-on-write filesystems mean an in-place overwrite is not guaranteed to reach the original physical blocks. It raises the cost of recovery substantially; it cannot promise erasure. For flash storage, full-disk encryption is the stronger control. ### Permanent and secure modes are permanent The recycle bin is the default because it is the reversible one. Choosing permanent delete, secure erase or hard-linking is choosing something with no undo, and the app says so in the confirmation before it acts. ### Beta builds are not code-signed yet The 1.0 beta ships unsigned, so SmartScreen will warn on Windows. We would rather say so here than have you find out at install time. ## Want the implementation details? The matching model, the overwrite sequence, the hard-link rollback and the folder-signature algorithm are documented for technical review. [Read the whitepaper](https://royalsoftworks.com/products/duplicate-duster/whitepaper/) [Talk to us](https://royalsoftworks.com/contact/?product=duplicate-duster) Free to download, no account · Pro €20 once, VAT included · Windows · [Download free →](https://royalsoftworks.com/download/#duplicate-duster) [Previous Links, overwrites and licences.](https://royalsoftworks.com/products/duplicate-duster/security/safeguards/) [All of DuplicateDuster security](https://royalsoftworks.com/products/duplicate-duster/security/)