Core Security Outflank Security Tooling vs MSBuildAPICaller: Side-by-Side Comparison (2026)

Core Security Outflank Security Tooling: Red team toolkit for EDR evasion, initial access, and post-exploitation. built by Core Security. Core capabilities include Advanced payload generation with AV/EDR evasion and anti-forensic capabilities, Office Intrusion Pack for phishing via malicious MS Office macros, Steganography-based payload concealment within image files..

MSBuildAPICaller: MSBuildAPICaller is an offensive security tool that enables interaction with the MSBuild API to execute arbitrary scripts for red teaming and penetration testing purposes..

Both serve the Red-Team & Adversary Emulation market but differ in approach, feature depth, and target audience.

Core Security Outflank Security Tooling is developed by Core Security. MSBuildAPICaller is open-source with 1,152 GitHub stars. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Core Security Outflank Security Tooling and MSBuildAPICaller serve similar Red-Team & Adversary Emulation use cases: both are Red-Team & Adversary Emulation tools, both cover Red Team, Evasion. Key differences: Core Security Outflank Security Tooling is Commercial while MSBuildAPICaller is Free, MSBuildAPICaller is open-source. Review the feature comparison above to determine which fits your requirements.