Add NSA Header adds an NSA-Keywords HTTP header to reduce the effectiveness of mass spying operations.
As of April 2026, Add NSA Header is a WordPress http header plugin with 0 active installations and a 0/5 rating0. It has been downloaded 1.2K+ times in total. Requires WordPress 1.2+ and PHP 4.0+. Available on WordPress.org since 2020. Top alternative: Plugin Name: Allow CORS XML-RPC.
Add NSA Header uses a list of keywords known to be sensitive to mass spying operations. It randomly selects a few of those keywords with each page request and includes them in an NSA-Keywords HTTP header. This introduces useless information to mass spying operations, reducing their effectiveness.
It is recommended that this be used only on WordPress sites that are only accessible via TLS.
| WordPress | 1.2+ requiredTested up to 6.9.4 |
| PHP | 4.0+ required |
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