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Searchable public database related to suspected terrorism records and security research references.

RAND terrorism incidents database for searching attacks, locations, groups, and event details.

predators / scammers documents a safety warning, scam report, malware concern, or risky download example.

Advisory Database is a GitHub repository or organization with source code, releases, documentation, or project resources.

IANA database listing top-level domains, registry operators, and root zone delegation data.

Calculator for converting and evaluating infix, postfix, and prefix expressions.

Hash lookup service for checking password hashes against large precomputed cracking databases.

Database of fake and fraudulent websites used to research online scams, phishing pages, and suspicious domains.

Exploit-DB paper archive with security research, exploitation papers, and technical writeups.

NERD IP reputation search for checking network entities, abuse data, and security signals.

Online Graphviz editor for writing DOT graphs and previewing network diagrams or relationship maps.

Online HTML editor for writing, testing, and previewing web markup directly in the browser.

Online editor for building and previewing Vega and Vega-Lite data visualizations.

Historical malware archive mirrored by vx-underground for research and preservation.

A database of IP addresses that have been part of the Tor network. It answers the question whether there was a Tor relay running on a given IP address

Hash search database for looking up password hashes and contributed recovery results.

Research database covering Russian aggression, military activity, and related open-source evidence.

A comprehensive IP intelligence database and API for accurate geolocation, ASN mapping, and VPN/Tor/Proxy detection.

is an online database that will provide you a report with detail information about a particular website and the history associated with it.

is a web service for Whois data contained within ARIN's registration database