Exclusive: StrongestLayer raises $4.1M for reasoning-based email security

Artificial intelligence-based email security startup StrongestLayer Inc. revealed today that it has raised $4.1 million in new funding to expand its platform and go-to-market push ahead of a planned Series A round. Founded in 2024, StrongestLayer offers software that skips the signatures, reputation databases and past-attack patterns that most email security relies on.