// startup autopsy

Sentryo

French ICS security pioneer absorbed by Cisco, its OT detection engine buried inside network switches.

acquisition gone wrongAcqui-hire

Founded	2014
Closed	2019
Country	France
Sector	Cybersecurity
Founder	Thierry Rouquet, Eric Lebret

// the model, blind

Evaluating only Sentryo’s profile at its peak — without knowing the outcome — the model ranked Competition as the #1 likely cause. Documented cause: Acquisition gone wrong.

Key Events Timeline

2014

FOUNDING

Thierry Rouquet and Eric Lebret founded Sentryo in Lyon to provide asset intelligence for industrial control systems.

2017

FUNDING

Raised €5M Series A; deployed platform across major European energy and water utility operators.

2019-06

ACQUISITION ATTEMPT

Cisco acquired Sentryo in June 2019; OT detection technology integrated into Cisco Cyber Vision product line.

2020

SHUTDOWN

Sentryo brand fully retired by mid-2020; team absorbed into Cisco's Enterprise Networking and Security division.

Full Analysis

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Documented cause

Sentryo, founded in Lyon, France in 2014 by Thierry Rouquet and Eric Lebret, built an ICS and IoT asset visibility and anomaly detection platform for industrial environments. The company raised €8M and won customers in energy and manufacturing. Cisco acquired Sentryo in June 2019 for an undisclosed sum, with the technology folded into Cisco Cyber Vision. The independent Sentryo brand ceased to exist within 12 months post-acquisition as Cisco integrated the OT detection engine into its networking hardware.

Lesson

“OT security pure-plays need utility contracts and regulatory mandates before networking giants bundle them.”

Failure anatomy

Collapse type

Acqui-hire

📉 MEDIUM