Lightspeed Venture Partners

San Francisco – October 29, 2026 -- Doppel, a social engineering defense (SED) platform vendor, has been named to the 2026-2027 Fortune Cyber 60 list for the second consecutive year, as it passes 300 employees and expands into Japan and Toronto.

Fortune list selects 60 venture-backed cybersecurity startups across three stages

The Cyber 60 is produced with Fortune editors, Lightspeed Venture Partners and AWS. It covers venture-backed startups that have not yet gone through an IPO, acquisition or other significant exit. Selection rests on financial performance, growth, business operations and cybersecurity market research, and Fortune reviews and validates the final list.

Companies are split into three groups of 20: Early Stage, Early Growth Stage and Growth Stage. Each group is listed alphabetically, so the list does not rank them.

New York – October 29, 2026 -- Bold Security, an endpoint data loss prevention (DLP) startup that has raised $40 million, has been named to the 2027 Fortune Cyber 60 in the early-stage category, its first year on the list.

Fortune list screens 60 unexited venture-backed security startups

The Fortune Cyber 60 is developed with Lightspeed Venture Partners and AWS. It covers venture-backed cybersecurity companies that have not had an IPO, acquisition or other significant exit. Lightspeed evaluates hundreds of candidates on annual recurring revenue, year-over-year growth and validated operating data, then groups the 60 selections into three stages of 20.