Ocean Raises $28M to Launch AI-Native Email Security Platform

CybersecurityVC

Sofya Zhamoitina

Venture Reporter at The Top Voices

May 19, 20261 min

Article hero imageImage credit: Ocean

Key Takeaways:

  • Ocean emerged from stealth with $28M in total funding.
  • Platform uses autonomous AI investigation instead of legacy detection systems.
  • Ocean protects enterprises against AI-powered phishing and email attacks.

Ocean, a cybersecurity company developing an AI-native email security platform, has emerged from stealth with $28 million in total funding led by Lightspeed Venture Partners, with participation from Picture Capital and Cerca Partners. The round also included several cybersecurity industry angel investors, including executives from Wiz, Armis and Axis Security.

The company is building an autonomous email security platform designed to protect enterprises from increasingly sophisticated AI-powered phishing and social engineering attacks.

Replacing Traditional Email Security

Ocean replaces legacy detection-based systems with autonomous AI investigation technology. Instead of relying on anomaly detection and pattern matching, the platform analyzes every email in context to identify malicious intent hidden inside realistic business communication.

The company says traditional tools are struggling against AI-generated phishing campaigns capable of mimicking tone, projects, relationships and internal communication patterns at scale.

The challenge is no longer simply detecting malicious emails, it’s understanding the intent within increasingly realistic communication,” said Shay Shwartz, CEO and co-founder of Ocean. “Security teams are wasting significant efforts looking for outliers in a world where attacks are designed to look normal."

Autonomous AI Investigation Engine

At the center of the platform is Ray, Ocean’s autonomous intelligence engine, which continuously investigates emails using organizational context and real-time analysis. The system is designed to automate investigation and remediation workflows while reducing operational pressure on security teams.

Ocean is already deployed across enterprise environments, including Fortune 500 organizations and companies such as Kayak and Headspace.

Expanding AI Research and Infrastructure

The new funding will support AI research and development, infrastructure expansion and continued development of the company’s AI-agent-based security platform as enterprises adapt to the rise of AI-powered cyber threats.

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