Most Active Cybersecurity Investors in Seattle 2026

9 firms writing Cybersecurity checks in Seattle, led by Madrona, 645 Ventures, boldstart ventures — ranked by verified deal count with the companies behind.

Cybersecurity in Seattle accounts for 4 tracked companies with verified cap-table data, 4 of which disclose round sizes totalling $237M. The median disclosed raise is $60M, and the largest is Protect AI at $109M, ahead of Oleria ($60M) and Dropzone AI ($57M).

The names that recur most often on these cybersecurity cap tables are Salesforce Ventures (2 companies), Acrew Capital (1 company), Aviso Ventures (1 company), boldstart ventures (1 company), Evolution Equity Partners (1 company), Knollwood Capital (1 company). By latest disclosed round, the market skews Series B (2), Seed (2).

Best funded Cybersecurity in Seattle companies

  1. Protect AI — $109M (latest: Series B)
  2. Oleria — $60M (latest: Seed)
  3. Dropzone AI — $57M (latest: Series B)
  4. MIND — $11M (latest: Seed)

Sector × city funding reports (20)

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