Attic M365 FREE vs KnowBe4 PhishER Plus: 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..

KnowBe4 PhishER Plus: Automated phishing incident response platform with threat categorization & removal. built by KnowBe4. Core capabilities include Automated threat categorization of reported emails, PhishRIP - one-click removal of malicious emails from all mailboxes, Global PhishRIP - crowdsourced threat removal across organizations..

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. KnowBe4 PhishER Plus differentiates with Automated threat categorization of reported emails, PhishRIP - one-click removal of malicious emails from all mailboxes, Global PhishRIP - crowdsourced threat removal across organizations.

Attic M365 FREE is developed by Attic Security. KnowBe4 PhishER Plus is developed by KnowBe4. Vendor maturity, funding stage, and team size can be important factors when evaluating long-term viability and support quality.

Attic M365 FREE and KnowBe4 PhishER Plus serve similar Anti-Phishing use cases: both are Anti-Phishing tools. Review the feature comparison above to determine which fits your requirements.