In partnership with
StrongestLayer closes $9.3M seed to fight AI-written phishing 🛡️
TL;DR
AI email security startup StrongestLayer raised $4.1 million in new funding, bringing its total seed round to $9.3 million. The company uses intent-based reasoning rather than pattern-matching to catch AI-generated phishing messages that bypass traditional filters.
Key Takeaways
The round was led by Inovia Capital, with Sorenson Capital, LaunchPod, Alumni Ventures, and former Mandiant CPO Chris Key participating.
Production deployments have grown more than eightfold in the past year.
Traditional email security matches against known bad patterns; StrongestLayer reasons about whether a message makes sense for your specific business context.
The FBI's Internet Crime Complaint Center lists business email compromise among the costliest online crimes, with reported losses in the billions annually.
For early-stage companies, a single fraudulent invoice can drain runway and cause reputational damage that outlasts the financial hit.
Why It Matters
AI-generated phishing no longer carries the typos and awkward phrasing that trained employees used to spot attacks. Messages now read as a real colleague sent them, which renders the old "look for red flags" advice nearly useless. Pattern-matching filters built for yesterday's threats cannot keep up.
For lean teams without dedicated security staff, this is a direct operational risk. StrongestLayer's growth signals real demand from companies that need protection proportional to the threat, not proportional to their headcount. If you run a startup handling sensitive client data or processing invoices, the cost of one successful BEC attack can exceed an entire year of security tooling spend.
Win AI Search Without a Big Team
92% of VCs use AI to find companies. 58% of buyers start there, too. If you're not showing up in AI answers, you're invisible before the conversation even starts. Join HubSpot for Startups, Anthropic, and Marketing Against the Grain on July 30 (11 am ET) for a live AEO teardown. Real startup. Real recs. Register and unlock the free Startup Visibility Bundle.
📰 In the News
Headlines & Launches 📣
ChatGPT Ads expanded with conversion-optimized bidding, mobile measurement integrations, bulk campaign management, and broader attribution tooling. These are table-stakes features on mature ad platforms like Google Ads and Meta Ads. If you've been watching from the sidelines, this is the update that puts ChatGPT Ads into real channel mix conversations. Conversion bidding means optimizing toward outcomes, not clicks.
Kevin Indig's H1 2026 halftime report maps what shifted across AI search, token budgets, SaaS valuations, and headcounts. Google's AI Mode hit 1 billion monthly active users. SaaS fell 30%, but not because of performance. The common thread: AI's economic impact is expanding faster than anyone can measure it, and 73.7 trillion tokens were processed in 30 days.
37 Free Claude Prompts With The AI Report
Subscribe to The AI Report, the free 5-minute daily AI brief for 400,000+ business leaders, and you’ll get 37 Claude prompts free in your welcome email. They’re organised by the 8 situations every manager faces. You get both: the newsletter and the prompts.
Marketing & Sales 🤑
Christopher Penn of Trust Insights lays out how to build agents that continuously monitor Google and Meta ad accounts and surface waste without you asking. The architecture combines deterministic Python scripts pulling API data on a schedule with a scheduled agent applying decision logic. Penn's first requirement: documented SOPs that define what counts as waste in your specific account. If you manage paid media at any scale, this pattern is worth studying.
Steve Phipps argues that AI is a force multiplier, and if your strategy is weak, it multiplies the weakness. His GUIDE Framework covers how to deploy AI in B2B marketing without losing strategic coherence, connecting every content decision back to a defined purpose. The key structural point: AI-generated content that doesn't reflect what your sales team actually hears in conversations doesn't convert.
Thanks for reading,
— Cagri Sarigoz
P.S. Don't Miss Out on These Resources:
🤝 Follow me on X and LinkedIn for regular updates and insights.
