Attic M365 FREE vs PhishingBox KillPhish: Side-by-Side Comparison (2026)

Attic M365 FREE: Protects Microsoft 365 users from phishing attacks using fake login pages. built by Attic Security. Core capabilities include Real-time detection of fake Microsoft 365 login pages, Red alarm screen warning when accessing fraudulent pages, Authenticity seal display on official Microsoft 365 login pages..

PhishingBox KillPhish: Email threat scanning and reporting add-in for Microsoft 365 and Google. built by PhishingBox. Core capabilities include AI-powered email threat scanning and analysis, Email risk scoring based on multiple threat indicators, Phishing email reporting button for users..

Both serve the Anti-Phishing market but differ in approach, feature depth, and target audience.

Attic M365 FREE differentiates with Real-time detection of fake Microsoft 365 login pages, Red alarm screen warning when accessing fraudulent pages, Authenticity seal display on official Microsoft 365 login pages. PhishingBox KillPhish differentiates with AI-powered email threat scanning and analysis, Email risk scoring based on multiple threat indicators, Phishing email reporting button for users.

Attic M365 FREE is developed by Attic Security. PhishingBox KillPhish is developed by PhishingBox. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Attic M365 FREE integrates with Microsoft 365. PhishingBox KillPhish integrates with Microsoft 365, Google Workspace, Outlook, PhishingBox Phishing Simulator. Check integration compatibility with your existing security stack before deciding.

Attic M365 FREE and PhishingBox KillPhish serve similar Anti-Phishing use cases: both are Anti-Phishing tools. Review the feature comparison above to determine which fits your requirements.