GCTI's open source detection signatures repository contains a collection of open-source detection signatures for various malware and threats. These signatures are designed to be used with various security tools and systems to detect and prevent malicious activities. The repository is maintained by GCTI and is updated regularly to include new signatures and improve detection capabilities.
FEATURES
ALTERNATIVES
Official repository of YARA rules for threat detection and hunting
A threat exposure management platform that monitors clear and dark web environments to detect and provide actionable intelligence on potential security threats like data leaks, credentials, and malicious actor activities.
Aggregator of FireHOL IP lists with HTTP-based API service and Python client package.
A comprehensive and unrestricted dataset of security incidents for research and decision-making
Open Source Intelligence solution for threat intelligence data enrichment and quick analysis of suspicious files or malware.
A reference implementation for collecting events and performing CAR analytics to detect potential adversary activity.
A community-driven project sharing detection logic, adversary tradecraft, and resources to make detection development more efficient, following MITRE ATT&CK structure.
PINNED

InfoSecHired
An AI-powered career platform that automates the creation of cybersecurity job application materials and provides company-specific insights for job seekers.

Mandos Brief Newsletter
A weekly newsletter providing cybersecurity leadership insights, industry updates, and strategic guidance for security professionals advancing to management positions.

CTIChef.com Detection Feeds
A tiered cyber threat intelligence service providing detection rules from public repositories with varying levels of analysis, processing, and guidance for security teams.

OSINTLeak
OSINTLeak is a tool for discovering and analyzing leaked sensitive information across various online sources to identify potential security risks.

ImmuniWeb® Discovery
ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web.

Checkmarx SCA
A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.

Orca Security
A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.

DryRun
A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.