Sublime Security, an AI-powered programmable email security platform, announced that it has raised $20 million in Series A funding. Index Ventures led the round, which included previous investors Decibel Partners and Slow Ventures.
Cybersecurity veteran and Crowdstrike’s co-founder and former CTO Dmitri Alperovitch is also joining the investment round and Board of Directors. And this funding will be used to further invest in the platform and improve the customer experience.
Email remains a top security concern for businesses in a rapidly evolving threat landscape. Sublime enables security teams to detect and prevent these attacks with out-of-the-box protection and unprecedented visibility into their cloud email environments. It also provides additional controls for customized detections, attack surface reduction, threat hunting, etc.
Business email compromises account for billions in losses. The volume has escalated, with bad actors setting up large language models (LLMs) for various malicious attacks, such as QR code phishing, extortion, malware, fraud, etc.
Defensive tools must be equally adaptable as the email threat landscape evolves rapidly. Sublime’s AI-powered detection engine, unlike the traditional black box approach, gives teams visibility, transparency, and control to protect their organizations against complex email-borne attacks.
Sublime’s Core Detections are open source on GitHub, where anyone can contribute to and benefit from new protections against the latest threats. And advanced teams that want granular control to tailor detections, create exclusions, or mitigate false positives for their organization also have access to Sublime’s detection engine with a purpose-built domain-specific language (DSL), Message Query Language (MQL), which works universally across Microsoft 365 and Google Workspace via API integrations.
Josh Kamdjou (founder and CEO of Sublime Security) spent ten years at the Department of Defense, engaged in various offensive cyber initiatives, and worked in the private sector as a red teamer. Email phishing was always the easiest way for him to gain initial access to a system, so he set out to build a product capable of stopping him.
Sublime Security co-founder and COO Ian Thiel worked as an early team member at Optimizely and most recently headed growth at Alto. The team publicly launched Sublime in February 2023, and the platform is now experiencing significant demand and impressive traction. Customers include some of the world’s top security teams at Spotify, Ramp, Vanta, Brex, Centrica, and others.
Along with its funding, Sublime also announced the launch of Attack Score, its latest feature that uses transparent, explainable machine learning to prioritize email threats. Attack Score aids security analysts in quickly understanding and prioritizing detected threats based on the detailed context of observed attack indicators. Security teams have complete control over Sublime’s Attack Score output, enabling them to combine it with other logic using detection-as-code.
KEY QUOTES:
“On the offense, Generative AI enables attackers to rapidly create diverse, sophisticated campaigns at scale, but on the defense, it’s a powerful tool for automated detection, triage, and explainability. The Sublime Platform is a modern take on email security that delivers immediate out-of-the-box protection, with the added ability for teams to tailor email security controls to fit organizational needs and benefit from community-driven protections as the threat landscape evolves.”
- Josh Kamdjou, Founder and CEO of Sublime Security
“Email security has become a high priority for businesses as they face GenAI-powered attacks, and we believe that Sublime’s impressive technology, the founders’ backgrounds, and their unique go-to-market strategy put them in a strong position to tackle this problem. Sublime is pioneering a bottoms-up, security practitioner-led approach that promotes community-driven collaboration, and given the massive market opportunity for email security, we are excited to see Sublime continue its trajectory of hyper-growth.”
- Jahanvi Sardana, Partner at Index Ventures
