Vulcan Cyber
Israeli vulnerability- and exposure-management company founded in 2018 by former Unit 8200 officers Yaniv Bar-Dayan and Tal Morgenstern with Roy Horev; bought by Tenable in 2025
| Vulcan Cyber
| |
|---|---|
| Trade name | Vulcan Cyber Ltd |
| Logo |  Vulcan Cyber logo |
| Type | Acquired by Tenable (7 February 2025) |
| Founded | 2018 |
| Founder(s) | Yaniv Bar-Dayan, Tal Morgenstern, Roy Horev |
| Headquarters | Tel Aviv, Israel; offices in the United States and Europe |
| Industry | Cyber security |
| Services | Vulnerability remediation and exposure management |
| Parent | Tenable |
| Number of employees | About 100 (2025) |
Vulcan Cyber (Vulcan Cyber Ltd) was an Israeli cyber-security company that developed software to automate and organise the fixing of software vulnerabilities. It was founded in 2018 by Yaniv Bar-Dayan, Tal Morgenstern and Roy Horev, and had offices in Tel Aviv, the United States and Europe.[1] Bar-Dayan and Morgenstern are both described as former officers of Unit 8200.[2][3] The US company Tenable bought it in February 2025 for about $150 million.[4]
History
According to Ctech, Vulcan Cyber raised a total of $55 million, including a $34 million Series B in November 2023, during the war on Gaza, led by Ten Eleven Ventures. Its investors included Maor Investments, Dawn Capital, Wipro Ventures, YL Ventures, which invested in its 2018 seed round, and the private investors Mickey Boodaei, Idan Plotnik and Giora Yaron. It had about 100 employees.[1]
On 29 January 2025 Tenable announced that it would buy Vulcan Cyber for about $150 million, a price that included cash held by Vulcan and payments to employees.[1] Tenable told the US Securities and Exchange Commission that on 7 February 2025 its Israeli subsidiary Ermetic Ltd had completed the purchase of all of Vulcan Cyber's shares for "approximately $148 million in cash and $2 million in Tenable restricted stock units".[4]
Founders and military service
- Yaniv Bar-Dayan, co-founder and chief executive: the SV101 founder directory describes him as "Ex 8200 officer (graduated from Hanan Talpiot program)" (Unit 8200; Talpiot), who spent four years in product, marketing and business-development roles at Cyberbit.[2]
- Tal Morgenstern, co-founder and chief product officer: described by the same directory as an "ex-8200 Officer (MAMRAM graduate), was in the cyber security division of the unit" (Mamram; Intelligence Corps), with experience at Comsec and Cyberbit.[3]
- Roy Horev, co-founder.[1]
See also
- Unit 8200
- Talpiot
- Tenable
- Indegy
- Cyber and tech firms founded by ex Unit 8200 or occupation forces veterans
Notes
- ↑ 1.0 1.1 1.2 1.3 Meir Orbach, Tenable acquiring Israel's Vulcan Cyber in $150 million deal Ctech, 29 January 2025, accessed 10 November 2026.
- ↑ 2.0 2.1 ICON, Yaniv Bar Dayan SV101 founder directory, accessed 10 November 2026.
- ↑ 3.0 3.1 ICON, Tal Morgenstern SV101 founder directory, accessed 10 November 2026.
- ↑ 4.0 4.1 Tenable Holdings, Inc., Form 8-K US Securities and Exchange Commission, 7 February 2025, accessed 10 November 2026.