Sublime Security
Email security platform with an open detection engine and AI agents for message triage.
Sublime Security detects email threats with a detection engine whose rules are open and editable, plus AI agents that triage user reports and draft new detections. Security teams can inspect and tune the logic behind every verdict. For teams that want email security they can reason about rather than a black box.
- Category
- Social Engineering & Human Risk
- Founded
- 2019
- Funding
- $240M raised (Series C, 2025)
- Website
- https://sublime.security
Seen at Black Hat USA 2026 (Platinum Plus sponsor, booth 2952).
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