Sentrycs
Israeli counter-drone company (formerly Convexum) that takes control of drones by protocol manipulation; co-founded by Unit 8200 and Cellebrite veteran Gilad Sahar; bought by Ondas Holdings in 2025
| Sentrycs
| |
|---|---|
| Trade name | Sentry CS Ltd (formerly Convexum) |
| Logo |  Sentrycs logo |
| Type | Subsidiary of Ondas Holdings (from 18 November 2025) |
| Founded | 2017 |
| Founder(s) | Gilad Sahar |
| Headquarters | Tel Aviv, Israel |
| Industry | Counter-drone systems; defence; homeland security |
| Services | "Cyber-over-RF" protocol-manipulation systems that detect, identify, track and take over drones |
| Parent | Ondas Holdings |
| Homepage | sentrycs.com |
Sentrycs (Sentry CS Ltd), known until 2023 as Convexum, is an Israeli counter-drone company that detects drones and takes control of them by manipulating their communication protocols, a method it calls "Cyber-over-RF".[1] Its co-founder Gilad Sahar traced his experience to "his service in the IDF elite intelligence unit 8200" (Unit 8200), after which he worked in the mobile forensics division of the phone-extraction company Cellebrite.[2] The US company Ondas Holdings bought it in November 2025, describing it as having "combat-proven deployments across 25 countries".[1][3]
History
In May 2017 TechCrunch described Convexum as having "developed a platform that takes over a malicious drone to allow it be landed safely", for sports venues, critical infrastructure and private companies.[2] The company has said that its team "embarked on a mission in 2017". On 4 April 2023 it announced from Tel Aviv that, "under the direction of the US fund manager, Treo Asset Management" (Treo Asset Management), Convexum had been renamed Sentrycs; its chief executive was then Yoav Zaltzman.[4]
Acquisition by Ondas
On 4 November 2025 Ondas Holdings, a Nasdaq-listed maker of autonomous drones and robots, agreed to buy Sentry CS Ltd, which it called "an Israel-based global leader" in counter-drone technology "across both defense and civilian environments". Ondas said that Sentrycs' systems protect "airports, borders, bases, and sensitive facilities", and that it would combine them with its own Iron Drone Raider interceptor.[1] It completed the deal on 18 November 2025, saying that Sentrycs had about 200 deployments in more than 25 countries and would extend its reach to "Tier-1 defense, public safety, and security agencies".[3]
Founders and military service
- Gilad Sahar, co-founder and chief executive of Convexum: TechCrunch wrote in 2017 that he had more than ten years' experience leading research on "protocols reverse engineering, dating back to his service in the IDF elite intelligence unit 8200 during which he won several accolades" (Unit 8200; Intelligence Corps), and that "Following his army service, Gilad was part of the pioneering team of Cellebrite's mobile forensic division", where he managed decoding research for four years.[2]
See also
- Unit 8200
- Cellebrite
- D-Fend Solutions
- Cyber and tech firms founded by ex Unit 8200 or occupation forces veterans
External links
Notes
- ↑ 1.0 1.1 1.2 Ondas Holdings, Ondas to Acquire Sentrycs, a Global Leader in Counter-UAS Cyber Technology, Expanding Global Reach to Tier-1 Defense and Security Agencies Across 25+ Countries Ondas Holdings, 4 November 2025, accessed 10 November 2026.
- ↑ 2.0 2.1 2.2 Matt Burns, Convexum and Regulus Cyber CEOs to address drone security at TechCrunch's Tel Aviv event TechCrunch, 8 May 2017, accessed 10 November 2026.
- ↑ 3.0 3.1 Ondas Holdings, Ondas Completes Acquisition of Sentrycs, a Global Leader in Counter-UAS Cyber Technology Ondas Holdings, 18 November 2025, accessed 10 November 2026.
- ↑ Sentrycs, Sentrycs Rebrand Doubles Down on Secure Drone Economy with Technology-Leading Integrated Counter-UAS Solution PR Newswire, 4 April 2023, accessed 10 November 2026.