Client impersonation
“Engagement letter: signature required today.”
A look-alike client domain sends people to a fake document portal.
Professional Services
Your clients’ names are the attack surface.
Accounting firms, consultancies and M&A advisors trade sensitive data and payment details with a small circle of high-trust clients. StrongestLayer reasons about every client email without getting in the way of how partners actually work.
Live in 15 minutes · No MX changes · SOC 2
The patterns getting past Microsoft and your gateway.
Tax-season refund redirect
“Please send my refund to this new account.”
An attacker posing as a client, or as the firm, redirects an e-file refund or harvests credentials while sensitive data is flying back and forth.
Deal-thread impersonation
“Updated wiring ahead of Friday’s close.”
One compromised thread reveals an active deal. A counterparty look-alike slips new instructions in before close.
<1%
false positives
~90%
less time on triage
15 min
to deploy, no MX changes
Partners need to know we’re not reading their mail.
Email content is processed in memory by the reasoning engines and not written to long-term storage. Only metadata, verdicts, and reasoning traces are retained, and no content is used to train shared models.
- In-memory processing
- No long-term content storage
- No training on your mail
- SOC 2
“Email security today is mostly a giant pile of rules and signatures, very brittle, very reactive. StrongestLayer approached it cleanly: LLMs first, architecture built around them. It solves problems the legacy stack literally can’t.”
Quick answers on professional services deployments.
Why are professional services firms a top target?
Firms control client funds and hold sensitive client data, and partners email constantly with high-trust counterparties an attacker can impersonate. A compromised partner inbox gives an attacker intelligence on every active engagement.
Will StrongestLayer disrupt client communications or partner workflows?
No. We integrate via API with Microsoft 365 or Google Workspace, with no MX changes and no mail-flow disruption. Partners won’t notice the platform is there until Inbox Advisor explains why a suspicious client email needs verification.
How long does deployment take?
Fifteen minutes via API. No MX record changes and no mail flow disruption. We connect through Microsoft Graph or the Google Workspace API and start reasoning about new mail in real time.
Do we have to rip and replace our existing email security?
No. StrongestLayer runs alongside whatever you have today, so you can see what your current tools are missing before you change anything.
Free AI gap check
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