Glossary

Privacy terms glossary

Plain-language explanations for encryption, tracking, compliance, and security concepts.

2 terms

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XKeyscore

Privacy

Surveillance analysis tool referenced in public disclosures; illustrates search/analysis capabilities.

mass surveillance fisa metadata

XSS (Cross‑Site Scripting)

Web Security

Client-side code injection in a trusted web origin.

session hijacking security headers clickjacking