Data Breach Explorer
Searchable timeline of publicly reported breaches with affected organizations, dates and data types.
Breach & Leak Research Website
Dark Web & Underground
Explore websites, apps and repositories in Dark Web & Underground.
Dark Web & Underground
122 listings
DDoSecrets
Public-interest archive preserving leaked and released datasets for journalism and historical research.
Dark Web Archives & Historical Records Website
Der Spiegel SecureDrop
Der Spiegel instructions for submitting documents securely through its verified SecureDrop service.
Whistleblowing & Anonymous Publishing Website
Dizzy
Research paper describing large-scale crawling and analysis methods for onion services.
Dark Web Research & Studies Website
eCrime.ch
Research service publishing structured ransomware and cybercrime ecosystem tracking data.
Breach & Leak Research Website
Europol Drugs and the Darknet Report
Europol and EMCDDA report on darknet drug markets, policy implications and research evidence.
Dark Web Research & Studies Website
Europol IOCTA 2026
Europol assessment of online organized crime, including criminal services and dark-web developments.
Dark Web Research & Studies Website
ExoneraTor
Historical lookup showing whether an IP address appeared as a Tor relay on a specified date.
Dark Web Archives & Historical Records Website
Facebook Data Breach Checker
Checker for seeing whether a phone number or profile appears in Facebook-related breach data.
Breach & Leak Research Website
Financial Times SecureDrop
Financial Times instructions for submitting documents securely through its verified SecureDrop service.
Whistleblowing & Anonymous Publishing Website
Finding Hidden Web Resources
National Transportation Library record for research on discovering and cataloging hidden-web resources.
Deep Web Resources & Discovery Website
Flare Blog
Research articles on dark-web monitoring, exposed data, cybercrime groups and external threats.
Dark Web News & Analysis Website
Flashpoint Blog
Intelligence analysis covering illicit communities, ransomware groups and underground online activity.
Dark Web News & Analysis Website
Forbes SecureDrop
Forbes instructions for submitting documents securely through its verified SecureDrop service.
Whistleblowing & Anonymous Publishing Website
Forbidden Stories SecureDrop
Forbidden Stories instructions for submitting documents securely through its verified SecureDrop service.
Whistleblowing & Anonymous Publishing Website
Freedom of the Press Foundation Source Protection
Practical guidance for journalists receiving sensitive tips and protecting confidential sources.
Whistleblowing & Anonymous Publishing Website
Getty Introduction to Metadata
Explains how metadata and structured access affect discovery of database-backed and deep-web content.
Deep Web Resources & Discovery Website
GlobaLeaks
Open-source platform used by organizations to run secure, privacy-preserving whistleblowing portals.
Whistleblowing & Anonymous Publishing Website
GlobaLeaks Community
Community support forum for organizations and developers operating GlobaLeaks whistleblowing sites.
Underground Communities & Forums Website
Greekleaks SecureDrop
Greekleaks instructions for submitting documents securely through its verified SecureDrop service.
Whistleblowing & Anonymous Publishing Website
Have I Been Pwned
Public breach-awareness service for checking whether an email address appears in known data breaches.
Breach & Leak Research Website
Hidden Web Data Integration
Research paper on integrating data from web databases that are not directly indexed by search engines.
Deep Web Resources & Discovery Website
Hidden Web Interfaces Study
Research study on identifying and understanding search interfaces that expose hidden-web databases.
Deep Web Resources & Discovery Website
Hyperion Gray Dark Web Map
Historical visualization and research record mapping a sample of linked Tor onion services.
Dark Web Archives & Historical Records Website