# Commercial National Security Algorithm (CNSA) Suite 2.0. FAQ

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On Thursday April 18th 2024, the NSA released an updated  
“Frequently Asked Question – FAQ” regarding its Commercial National Security Algorithm (CNSA) Suite 2.0. FAQ [link to PDF](https://media.defense.gov/2022/Sep/07/2003071836/-1/-1/1/CSI_CNSA_2.0_FAQ_.PDF).

Crypto4A completed a side-by-side comparison of this new revision and the previous version and found the following additions/changes captured in the PDF file.