Atomic Red Team vs FourCore ATTACK

Atomic Red Team is a free library of tests security teams can run to check controls, validate visibility, and assess detection coverage. Its tests emulate adversary behaviors and map to the MITRE ATT&CK matrix. They have few dependencies and use a structured format suited to automation frameworks. Invoke-AtomicRedTeam is a PowerShell module for testing defenses against attack techniques; it can run tests locally or on remote machines through PowerShell Remoting. Atomic Runner can run a configurable list unattended, once per week by default. The project includes a Ruby API to validate tests and generate documentation, and pulls ATT&CK data in STIX form. Listed integrations include Microsoft Defender for Endpoint, AttackIQ, Datadog Workload Security Evaluator, OpenBAS, Splunk Attack Range, and Tidal Cyber. Coverage includes Windows, Linux, macOS, cloud infrastructure, containers, SaaS, Azure AD, Google Workspace, Office 365, and IaaS providers. Tests can be chained manually, but there is no automated solution for emulating a specific attack group as a whole. Users are instructed to obtain permission from the environment owner before running a test.

FourCore ATTACK is an adversarial exposure validation platform that simulates cyberattacks to assess how security controls respond. Its threat intelligence connects current threats with an organization’s environment to help prioritize tests, and controlled campaigns emulate adversary tactics, techniques, procedures, indicators, and artifacts. Coverage includes endpoints, email, WAF, network segmentation, SIEM, EDR, XDR, firewalls, DLP, and exfiltration controls. Results map to MITRE ATT&CK techniques and classify outcomes as detected, partially detected, blocked, or missed. Campaign evidence can connect simulated behavior with control responses, telemetry, alert timing, and recommended next actions. Teams can generate or refine Sigma, YARA, Snort, and configuration changes, then retest after updates. Listed integrations include CrowdStrike, SentinelOne, Microsoft Sentinel, QRadar, Proofpoint, Cisco Secure Email, and ServiceNow. FourCore describes the product as AWS-hosted SaaS, with on-premises solutions available by discussion. Lightweight Windows and Linux agents connect to the SaaS platform. Simulations are designed not to disrupt or destroy target systems. Pricing is on request.