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Attic M365 FREE is a commercial anti-phishing tool by Attic Security. KnowBe4 PhishER Plus is a commercial anti-phishing tool by KnowBe4. Compare features, ratings, integrations, and community reviews side by side to find the best anti-phishing fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Startup and SMB security teams protecting Microsoft 365 will benefit most from Attic M365 FREE because it stops AiTM phishing attacks that bypass MFA, the attack class traditional email filters miss entirely. The tool deploys in five minutes with no payment required, making it immediately useful for resource-constrained teams, and its real-time detection of fake login pages covers both NIST PR.AA and DE.CM functions simultaneously. Skip this if your organization needs protection beyond Microsoft 365 or runs a heterogeneous SaaS stack; Attic is deliberately focused on one platform and one threat vector.
Security teams at SMBs and mid-market companies drowning in phishing reports will see immediate ROI from PhishER Plus because one-click removal actually stops attacks instead of just flagging them. The platform handles 13 million global users' threat data and pulls incident response into the hands of non-experts through automated categorization and PhishRIP, which removes malicious emails across all mailboxes simultaneously. Skip this if your organization has a mature SOC already running advanced email security with custom incident playbooks; PhishER Plus shines when you lack dedicated response capacity, not when you need to replace it.
Protects Microsoft 365 users from phishing attacks using fake login pages
Automated phishing incident response platform with threat categorization & removal
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Common questions about comparing Attic M365 FREE vs KnowBe4 PhishER Plus for your anti-phishing needs.
Attic M365 FREE: Protects Microsoft 365 users from phishing attacks using fake login pages. built by Attic Security. headquartered in Netherlands. 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. headquartered in United States. 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.
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