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May 19, 2026 • Marina Temkin

Ocean Raises $28M to Fight AI Phishing with Agentic Email Security

Ocean Raises $28M to Fight AI Phishing with Agentic Email Security Ocean Raises $28M to Fight AI Phishing with Agentic Email Security Ocean Raises $28M to Fight AI Phishing with Agentic Email Security

From Teen Hacker to Iron Dome Researcher: Ocean Raises $28M to Fight AI Phishing

Overview

Ocean, an agentic email security platform designed to combat AI-powered phishing attacks, has emerged from stealth mode with $28 million in total funding. The startup was founded by Shay Shwartz, a former teen hacker turned elite cybersecurity researcher who worked on Israel's Iron Dome project.

The Founder's Journey

  • Early Days: Shay Shwartz started as a teenage hacker before being caught at age 16
  • Career Pivot: Shifted focus to prevention rather than attacks
  • Elite Experience: Spent a decade in top-tier cybersecurity roles in Israel's defense and intelligence units
  • Previous Role: Worked at Axis (later acquired by HPE) before launching Ocean

Funding Details

  • Total Raised: $28 million
  • Lead Investor: Lightspeed Venture Partners
  • Participating Investors: Picture Capital and Cerca Partners
  • Notable Angels:
    • Assaf Rappaport (Wiz co-founder and CEO)
    • Yevgeny Dibrov and Nadir Izrael (Armis co-founders; Armis recently sold to ServiceNow for $7.75 billion)

The AI Phishing Problem

Key Challenge: AI has automated and scaled spear-phishing attacks that previously required sophisticated hackers and significant manual labor.

"AI just made the entire process automatic, so the scale is much, much bigger now. I can instruct LLM to go and understand exactly who you are, harvest large amount of public information, and create those phishing attacks very targeted against you." — Shay Shwartz

Ocean's Solution

Technical Approach

  • Small Language Model: Built specifically to quickly analyze emails
  • Context Analysis: Thoroughly analyzes the context of every incoming email
  • Intent Detection: Understands sender's intent and evaluates against organizational context
  • Fraud Detection: Identifies impersonation attempts and fraudulent emails

Current Scale

  • Processing Volume: Billions of emails analyzed monthly
  • Customers: Includes Kayak, Kingston Technology, and Headspace

Positioning

Philosophy: "This is like having a guard in every door. This is how we make the inbox a safe place with high hygiene."

Market Context

Established Players: Proofpoint, Mimecast Newer Competitors: Abnormal Security Ocean's Differentiation: Purpose-built for AI-powered phishing attacks, not traditional phishing

Key Takeaways

  • AI has dramatically increased the scale and sophistication of phishing attacks
  • Traditional email security solutions weren't designed for AI-powered threats
  • Ocean uses a specialized small language model for rapid contextual email analysis
  • The startup has already gained traction with major customers
  • Strong backing from cybersecurity veterans and successful exits validates the approach