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Tor add-on that helps onion-service operators reduce guard-discovery and related attacks.

The Guardian instructions for submitting documents securely through its verified SecureDrop service.

Narrative podcast documenting breaches, underground actors, darknet cases and security investigations.

Practical guidance for journalists receiving sensitive tips and protecting confidential sources.

Investigative reporting archive focused on dark-web markets, breaches and underground actors.

Study of whether website fingerprinting can distinguish and identify Tor onion-service traffic.

Open-source scanner for auditing onion-service metadata and operational security.

Reporting archive on dark-web crime, underground forums, data leaks and law-enforcement actions.