10 promising cybersecurity startups CISOs should know about

10 Promising Cybersecurity Startups

From NHI security to deepfake detection and securing the agile enterprise, these startups have the products, pedigree, track record, and vision to be worthy of CISOs’ security tech radar.

Coming up with an accurate head count for cybersecurity startups is virtually impossible, with new ventures popping up seemingly every day. There’s no industry standard for how many years it takes before a startup should cease being called a startup.

Industry veteran Richard Stiennon, who tracks cybersecurity vendors on his IT-Harvest dashboard, lists more than 4,000 companies in the cybersecurity sector, startup or not, including more than 170 AI security vendors alone.

For this article, we have set 2020 as a cutoff for defining a startup, so any vendor founded before then has been excluded from consideration.

Author summary: Discover 10 cybersecurity startups to watch.

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CSO Online CSO Online — 2025-11-05

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