10 promising cybersecurity startups CISOs should know about

10 Promising Cybersecurity Startups

CISOs should be aware of these startups, which offer products and solutions for various cybersecurity needs, including NHI security, deepfake detection, and securing the agile enterprise.

The number of cybersecurity startups is difficult to track, with new ventures emerging daily. According to industry veteran Richard Stiennon, who monitors cybersecurity vendors on his IT-Harvest dashboard, there are over 4,000 companies in the sector, including more than 170 AI security vendors.

For this article, the cutoff year for defining a startup is 2020, excluding vendors founded before then.

Coming up with an accurate head count for cybersecurity startups is virtually impossible, with a new venture popping up seemingly every day.

Author's summary: Discover 10 cybersecurity startups worthy of CISOs' attention.

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CSO Online CSO Online — 2025-11-05

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