Core Security Cobalt Strike vs RedELK: side-by-side comparison (2026)

Core Security Cobalt Strike: Post-exploitation threat emulation platform for red team operations. Built by Core Security.

RedELK: RedELK is a SIEM tool designed for red teams to monitor and receive alerts about blue team detection activities during penetration testing engagements.

The table above shows where their features, integrations, deployment and company size fit differ.

Core Security Cobalt Strike is made by Core Security. RedELK is open-source with 2,625 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Core Security Cobalt Strike and RedELK are both Red-Team & Adversary Emulation products, and both cover Red Team. Key differences: Core Security Cobalt Strike is Commercial while RedELK is Free, RedELK is open-source. Use the table above to see where features, deployment and company size fit differ.