Hash all files in a folder: sha256sum * > hashes.txt

Strip metadata: mat2 *.pdf *.jpg *.png

PGP key generation (GnuPG): gpg --quick-gen-key "Persona X <x@proton.me>" ed25519 cert sign 2y

Tor-only egress (Linux iptables example):

Test DNS/WebRTC leaks: visit https://ipleak.net/ and ensure no IPv6/WebRTC disclosures.