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Repacket Phishing Prevention is a commercial anti-phishing tool by Repacket. Attic M365 FREE is a commercial anti-phishing tool by Attic Security. 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:
Startups and SMBs tired of phishing breaches eating up limited security staff should deploy Repacket Phishing Prevention for its AI classifier that blocks malicious sites before they load, requiring zero ongoing tuning or policy maintenance. The tool covers NIST PR.AA and PR.PS by enforcing authentication and platform controls at the endpoint layer without admin overhead, which matters when you're running skeleton IT teams. Skip this if you need detection and response workflows that feed into a SOC; Repacket stops the click, not the investigation.
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.
Blocks phishing sites on employee devices using AI-based real-time classification.
Protects Microsoft 365 users from phishing attacks using fake login pages
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Common questions about comparing Repacket Phishing Prevention vs Attic M365 FREE for your anti-phishing needs.
Repacket Phishing Prevention: Blocks phishing sites on employee devices using AI-based real-time classification. built by Repacket. headquartered in United States. Core capabilities include Blocks phishing sites from loading on employee devices when a malicious link is clicked, Real-time site classification using static analysis, threat intelligence, and AI, Multi-layered block, warn, or allow site policy enforcement..
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..
Both serve the Anti-Phishing market but differ in approach, feature depth, and target audience.
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