Meet the Atomic Family

The Atomic Family makes it easier than ever to mount an effective defense against malicious activity.

Atomic Red Team

A library of simple, focused tests mapped to the MITRE ATT&CK® matrix. Each test runs in five minutes or less, and many tests come with easy-to-use configuration and cleanup commands.


A PowerShell-based framework for developing and executing atomic tests. With PowerShell Core, security teams can execute tests across multiple platforms and over a network.


A PowerShell module for executing many variations of an attack technique at once. AtomicTestHarnesses also includes tests to validate test execution and telemetry.

Chain Reactor

A tool for testing detection and response coverage on Linux machines. Chain Reactor produces customizable executables that simulate sequences of actions like process creation and network connection.

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