AI is breaking email security.
10x the detection. 1/10 the false positives. 15-minute deploy. Manage your security, not the tool.
(independent assessment)
We catch threats your gateway misses.
The same AI-generated attack, run through three generations of email security. Two wave it through. Watch why.
77b0d4aa · fake-invoice-v3
c21e88f0 · cred-harvest-19
5d90ab77 · qr-mfa-lure
e4c2101b · payroll-swap-x
18ffb3c6 · docu-clone-7
92ad60e4 · gift-card-gen
b7e5529d · wire-urgent-24
3c1af8b2 · seg-bypass-11
f60d47ce · zip-dropper-5
Signatures compare each email to a library of past attacks. AI-generated attacks are unique every time, so there's never a match.
Patterns score how unusual an email looks. The most dangerous attacks pass authentication and look completely routine, so they score clean.
Reasoning reads what the email is trying to accomplish and spots the gap between stated purpose and actual request. No signature or baseline needed, so it catches attacks on first encounter.
Three core features, working live.
AI Inbox Advisor
Every email gets a Trust Score and a plain-language verdict, right where your team works.
Explore Inbox AdvisorThreat Triage
Every alert arrives pre-investigated, with an explainable verdict. Cases close in minutes, not hours.
Explore Threat TriageThreat Hunt
Turn one suspicious email into an organization-wide sweep, by sender, subject, URL, or domain.
Explore Threat HuntWhat a law firm saw in the first month.
What took our team 15 minutes to investigate now takes seconds. StrongestLayer fundamentally changed how we handle email threats across our firm.
Don't take our word for it.
Phishing attacks aren't just evolving, they're mutating. With generative AI, attackers can craft highly convincing, targeted messages at scale, making traditional defenses obsolete. The real risk isn't just in the inbox, it's in every human decision that follows.
Email security today is mostly a giant pile of rules and signatures. Very brittle, very reactive. And even when vendors say "AI, " it's usually just another score glued on top. StrongestLayer approached it cleanly, LLMs first, architecture built around them. It solves problems the legacy stack literally can't.
They aren't tweaking legacy systems, they're rethinking the problem entirely. By analyzing the intent behind messages, StrongestLayer's platform performs more like a team of 1, 000 expert analysts, catching threats even when there's no known pattern.
Inbox Advisor saves my department hours every week by cutting down triage time on every alert, while the SOC dashboard shows exactly what my team needs at a glance. StrongestLayer in my eyes is that rare tool that is both incredibly powerful and genuinely well-designed, its interface is clean, intuitive, and an absolute joy to use.
StrongestLayer helps us in the areas where our users have fallen short. Using an AI model to detect and quarantine phishing emails is far better than relying on the user to catch them.
The whole platform in motion.
DMARC for CISOs: What It Actually Protects (And What It Doesn't)
DMARC protects outbound domain reputation against exact spoofing, but covers only ~1% of email threats. It fails to stop lookalike domains, BEC, compromised accounts, and social engineering attacks.
Reasoning, a podcast for defenders.
Hosted by Alan LeFort & Karen Letain. No vendor hype. Just the cybersecurity shifts that actually matter, and what to do about them on Monday morning.
Run a real diagnostic. Free, no signup.
Our threat research team publishes the tools we built for analysts. 2 live diagnostics, 3 reference taxonomies, 44 walkable email attacks. No waitlists. No sales follow-up.
Corporate Email Posture Check
Map the public data attackers can harvest about your org against your email stack's actual detection. See where you're exposed and where you're blind.
PASRP Policy Generator
Generate a Public Attack Surface Reduction Policy in five minutes. Six questions produce a Word doc with SEC, HIPAA, and ITAR floors applied.
Connects with your SIEM, no new console required.
Questions CISOs actually ask.
What is StrongestLayer?
StrongestLayer is an AI-native email security platform powered by TRACE, the Threat Reasoning AI Correlation Engine. Instead of matching signatures or static rules, TRACE uses a multi-LLM ensemble to reason about every email's sender, intent, and infrastructure the way a human analyst would, and explains every verdict.
How is StrongestLayer different from Proofpoint, Mimecast, or Abnormal?
Legacy email security relies on signatures, sender reputation, and pattern matching, approaches built before generative AI made every phishing email unique. StrongestLayer is built on LLMs from day one, reasoning about intent rather than recognizing patterns. False positive rates run under 1%, and deployment is 15 minutes via API instead of multi-month migrations.
How long does deployment take?
Fifteen minutes via API. No MX record changes, no mail flow disruption, no parallel-run period. We connect through Microsoft Graph or the Google Workspace API, ingest your last 30 days of mail history to build behavioral baselines, and start reasoning about new mail in real time. Customers see results day one and can run alongside their existing SEG until they're ready to retire it.
Do we have to rip and replace our existing email security?
No. StrongestLayer can replace your gateway, or run alongside it, your call. Most customers start with us deployed in parallel to their existing Proofpoint, Mimecast, or Microsoft Defender stack so they can see what their current tools are missing without disrupting mail flow. Once they're confident, the majority retire the legacy SEG and keep the Microsoft/Google native layer + StrongestLayer. A meaningful share also keep the legacy SEG for the volume layer and run StrongestLayer on top, both setups are fully supported.
Does StrongestLayer replace Microsoft Defender for Office 365 or Google Workspace native protection?
No, and you wouldn't want it to. Microsoft and Google handle the volume layer (basic spam, known-bad URLs, malware signatures) extremely well. StrongestLayer sits behind them, reasoning about everything they let through. Customers typically retire their third-party SEG (Proofpoint, Mimecast) and keep Microsoft/Google native + StrongestLayer.
What does StrongestLayer cost?
Pricing is custom and scales by mailbox. We don't have rigid tiers, book a demo for a deployment-specific quote.
Where does StrongestLayer run? How is data handled?
SaaS. Email content is processed in memory by the reasoning engines and not written to long-term storage; only metadata (verdicts, reasoning traces, sender features) is retained for SOC audit. Full security questionnaire and data-handling documentation are available under NDA.
Who founded StrongestLayer?
Alan LeFort (CEO, ex-Proofpoint, McAfee, Intel Security), Muhammad "Riz" Rizwan (CTO), and Joshua Bass (CPO). Founded 2024, San Francisco. $5.2M seed led by Sorenson Capital with Recall Capital participating, July 2025.
Don't let legacy tools leave you exposed.
Tomorrow's Threats. Stopped Today.
Tomorrow's Threats. Stopped Today.
