Ocean has launched from stealth with $28 million in funding and a focus on one of the most familiar problems in enterprise security: email attacks that are getting harder to spot. The round was led by Lightspeed Venture Partners, with participation from Picture Capital, Cerca Partners, and several angel investors from the cybersecurity market.The company is positioning itself around agentic email security. Its platform uses AI agents to investigate emails in real time, looking at the sender, message content, links, technical infrastructure, and business context before deciding whether a message can be trusted. Ocean said its platform is already protecting hundreds of thousands of mailboxes for customers, including KAYAK, Kingston Technology, and Headspace.Phishing has changed. Attackers can now use AI to create polished, personalized emails at scale, which makes older detection models less reliable. Messages may no longer carry obvious spelling errors, odd phrasing, or suspicious patterns. For security teams, that means more pressure to understand intent, context, and behavior instead of relying only on signals that mark an email as suspicious.Email remains a common entry point for attacks, and AI-generated phishing could make that problem bigger. Ocean is betting that autonomous investigation can help security teams move faster, cut through cleaner-looking threats, and respond before a convincing message turns into a business compromise.
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