No source ranks cybersecurity angels, so this list is in no particular order and mixes two kinds of names. Specialists, such as Shlomo Kramer and Ron and Cyndi Gula, are described publicly as security investors. Operators, such as George Kurtz and Doug Merritt, are named as angels in announced security rounds. Each fact below links to its source.
How was this list built?
The sources are press coverage of specific funding rounds, the investors' own pages, and Lenny's Newsletter, which analyzed the most active US angels with Crunchbase in December 2024 and warns that its figures are directional. A name in a funding announcement shows that someone wrote a check into one company. It does not show how active that person is overall, so the two groups below are kept apart.
Anyone checking the ranking will find this site's author, Sahin Boydas, first for 2024. The profiles here are the investors that security coverage names.
Which investors specialize in cybersecurity?
Ron and Cyndi Gula
Gula Tech Adventures says on its homepage that it invests in AI, cybersecurity and national security startups, and that it has self-funded more than $200 million into such startups since 2017. The site cites 18 successful exits and two IPOs. It names Ron and Cyndi Gula as its founders and notes their experience building security companies, including Tenable Network Security. A 2018 interview in Gulf News says Ron Gula began investing his own money in 2016, made small checks into at least 13 companies, mostly in the Mid-Atlantic, and wanted to move to larger checks alongside major venture funds as his experience grew. Neither source gives a typical check size today.
Shlomo Kramer
Calcalist calls Kramer one of the most active angel investors in the cybersecurity industry and says he has invested in Palo Alto Networks and numerous other startups. Calcalist also reported in May 2026 on Skinos Ventures, a fund he mostly backs; its size and terms are in the Israel guide.
Anatoly Yakovenko
Lenny's ranks the Solana co-founder fifth among 2024's most active US angels and lists his areas as AI, fintech, cybersecurity, B2B SaaS and infrastructure. Security is one focus among several for him, not the whole thesis.
Which operators have been named as angels in recent security rounds?
These names come from announcements, in the order of the rounds, newest first.
Aryon Security, June 2026
Aryon's $29 million Series A was led by Brightmind Partners, with Datadog Ventures and Skinos Ventures taking part, and brought its total funding to $38 million. Blumberg Capital's announcement says the company was supported by prominent angel investors and serial entrepreneurs: George Kurtz, CEO of CrowdStrike; Robert Herjavec; Yevgeny Dibrov, CEO of Armis; and Nadir Izrael, CTO of Armis. It describes Aryon as a cloud security enforcement platform that applies policies before risks reach production, sold to mid-size and large enterprises in regulated industries such as healthcare, banking and telecommunications.
Fig Security, March 2026
Globes reported that Fig Security raised $38 million across seed and Series A rounds from Team8 and Ten Eleven Ventures, together with security leaders including Doug Merritt, the former CEO of Splunk, and Rene Bonvanie, the former CMO of Palo Alto Networks. Globes calls them security leaders, while SecurityWeek's report on the same round says prominent angel investors took part, including former Splunk and Palo Alto Networks executives. SecurityWeek adds that the funding is for product development, team expansion and go-to-market work, particularly in North America. The angels are individual backers rather than specialist angels.
Sweet Security, August 2023
Calcalist reported that Sweet Security's $12 million seed round was led by Glilot Capital Partners with CyberArk Ventures, and that angels included Gerhard Eschelbeck, formerly the CISO of Google, and Travis McPeak, who led product security at Databricks.
What do the three rounds have in common?
In each announcement a venture firm led and the angels took part alongside it: Brightmind Partners at Aryon, Team8 and Ten Eleven Ventures at Fig, and Glilot Capital Partners at Sweet. The named angels mostly came from security and infrastructure companies, as chief executives and technology chiefs at CrowdStrike and Armis, a former chief executive of Splunk and a former chief marketing officer of Palo Alto Networks at Fig, a former Google CISO and a Databricks product security lead at Sweet. Herjavec is the exception, since Blumberg's release gives him no company role.
None of the three sources says what the angels contribute beyond capital, and none states a cheque size. Aryon's announcement quotes Herjavec on the product's vision, and the Fig and Sweet coverage names or describes the angels without saying what they do for the company. The sources do not explain why security operators write angel cheques, so any pattern here rests on a sample of three rounds.
For the investor's side of the table, angel investing in cybersecurity startups covers what investors check, and angel investing due diligence lists the questions to ask before wiring money. Other routes are in how to find angel investors for your startup and how to join an angel group or syndicate, and how much angel investors invest sets expectations on check size. More lists are in the angel investing section.
Frequently Asked Questions
Q:Who is the most active angel investor in cybersecurity?
No public source ranks angels by cybersecurity activity. Calcalist calls Shlomo Kramer one of the most active angels in the industry, and Lenny's Newsletter lists cybersecurity among the areas of Anatoly Yakovenko, the fifth most active US angel of 2024. Neither is a ranking of the sector.
Q:How much do cybersecurity angels invest?
The sources used here do not publish individual check sizes for the investors above. The one related figure belongs to Skinos Ventures, the fund largely backed by Kramer, which is covered in the Israel guide. That is a fund figure, not an angel check.
Q:Do I need to be accredited to invest in a security startup?
In the US, most private startup rounds are open only to accredited investors. The SEC definition generally covers individuals with income above $200,000 ($300,000 with a spouse) in each of the last two years, or net worth above $1 million excluding the primary residence. Other countries use different tests.
Q:Do angels named in a funding announcement invest regularly?
Not necessarily. An announcement shows one check into one company. Overall activity shows up in sources that list a body of work, such as an investor's own site, a fund page or a ranking like Lenny's.