Dark Web & Underground

I2P Forum

Public community forum discussing I2P software, services, development and network operations.

Underground Communities & Forums Website

I2P Network Map

Measurement study mapping the I2P anonymity network and analyzing its observable structure.

Dark Web Research & Studies Website

Intel 471 Blog

Intelligence reporting on cybercriminal groups, underground forums and ransomware operations.

Dark Web News & Analysis Website

ITRC Data Breach Tracking

Identity Theft Resource Center database documenting publicly reported US data compromises.

Breach & Leak Research Website

KELA Blog

Analyst reporting on cybercrime marketplaces, underground actors, ransomware and stolen-data trends.

Dark Web News & Analysis Website

Kenneth R. Rosen SecureDrop

Kenneth R. Rosen instructions for submitting documents securely through its verified SecureDrop service.

Whistleblowing & Anonymous Publishing Website

Krebs on Security — Dark Web

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

Dark Web News & Analysis Website

Leaked.site

Leak-awareness search page for checking whether identifiers appear in exposed datasets.

Breach & Leak Research Website

Leakedpassword.com

Exposure checker for seeing whether a password or email appears in known breach data.

Breach & Leak Research Website

Mimir Onion Study

Longitudinal study measuring unique Tor onion services while accounting for mirrors and topology bias.

Dark Web Research & Studies Website

Monitoring the Dark Web

CUNY research paper examining automated collection and analysis of dark-web forum data.

Dark Web Research & Studies Website

Mozilla Monitor

Mozilla service that checks email addresses against known breaches and explains protective steps.

Breach & Leak Research Website

National Academies — Deep Web

National Academies chapter explaining deep-web content, discovery limits and information retrieval.

Deep Web Resources & Discovery Website

New York Times SecureDrop

New York Times instructions for submitting documents securely through its verified SecureDrop service.

Whistleblowing & Anonymous Publishing Website

News24 SecureDrop

News24 instructions for submitting documents securely through its verified SecureDrop service.

Whistleblowing & Anonymous Publishing Website

NRK SecureDrop

NRK instructions for submitting documents securely through its verified SecureDrop service.

Whistleblowing & Anonymous Publishing Website

Nyx

Terminal monitor for inspecting a local Tor process, circuits, connections and relay activity.

Tor & Hidden Services Website

OEDB Invisible Web Guide

Guide to search tools and databases that surface information outside conventional web indexes.

Deep Web Resources & Discovery Website

Onion Service Fingerprintability

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

Dark Web Research & Studies Website

Onion Service Honeypot Study

Research paper evaluating abuse observed through a controlled honeypot hosted as a Tor onion service.

Dark Web Research & Studies Website

Onion Services Documentation

Official guides for understanding, deploying and maintaining Tor onion services.

Tor & Hidden Services Website

Onion Services Ecosystem

Tor Project documentation portal for onion-service applications, standards and operator tools.

Tor & Hidden Services Website

onion_osint

Open-source utility for gathering public metadata about onion services during authorized research.

Dark Web Search & Directories GitHub repo

Onionbalance

Load-balancing system for resilient Tor onion services, documented by the Tor onion-services team.

Tor & Hidden Services Website