Nebula by BreachLine Labs vs o365-attack-toolkit: side-by-side comparison (2026)

Nebula by BreachLine Labs: Fully autonomous AI security engineer that works for you. Built by BreachLine Labs.

o365-attack-toolkit: A toolkit to attack Office365, including tools for password spraying, password cracking, token manipulation, and exploiting vulnerabilities in Office365 APIs and services.

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

Nebula by BreachLine Labs is made by BreachLine Labs. o365-attack-toolkit is open-source with 1,116 GitHub stars. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Nebula by BreachLine Labs and o365-attack-toolkit are both Penetration Testing products, and both cover Reconnaissance. Key differences: Nebula by BreachLine Labs is Commercial while o365-attack-toolkit is Free, o365-attack-toolkit is open-source. Use the table above to see where features, deployment and company size fit differ.