Major Law Firm Case Study: 347 Threats Bypassed Microsoft E5 + Leading SEG in 10 Days

A major law firm discovered the hard truth: even with Microsoft E5 and a top Secure Email Gateway in place, AI-powered social engineering attacks were still sliding into inboxes. During a 10-day assessment, StrongestLayer uncovered 347 advanced threats that traditional tools completely missed. These included BEC scams, credential harvesting, and internal HR phishing that put more than $267M in annualized financial risk on the line.

This case study breaks down how StrongestLayer’s AI-native behavioral analysis detects attacks that look clean on the surface, including a real example of a CFO impersonation scam requesting an $847K wire transfer. It also shows how teams reduce investigation time by 80%, slash false positives, and deploy in minutes with no MX changes.

Organizations with premium security stacks are still exposed. This story shows what happens when you close the detection gap.

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