Defense first
Every decision starts with one question: does this make our customers harder to breach? Security is never a checkbox here.
Our story
Founded by responders, for responders
Sentinel started in 2018 when a small group of incident responders and detection engineers kept living the same nightmare: too many tools, too many alerts, and not enough time to tell a real attack from noise. They believed defenders deserved better than a console for every problem.
So they built one platform that correlates signals from endpoints, identities, and the cloud into a single, clear picture — and automates the response that used to take hours. What began as an internal tool now protects more than 4,800 teams across 40 countries.
We're still engineers first. Every feature is shaped by the people who actually sit the night shift, and our mission hasn't changed: make world-class security something any team can operate.
Mission & values
Make strong security the default
Our mission is to make enterprise-grade protection accessible to every team. These values guide how we build and how we defend.
Radical transparency
We tell customers what we see — good or bad — and publish how our platform works. Trust is earned in the open.
Speed matters
In security, minutes decide outcomes. We obsess over reducing the time from signal to containment for every customer.
Defenders welcome
We build for the analyst on the night shift. If a feature makes their job harder, it doesn't ship.
Privacy by design
We collect only what protects you, encrypt everything, and never sell data. Your telemetry is yours.
Outcomes over noise
A wall of alerts isn't security. We measure ourselves by threats stopped, not dashboards filled.
The numbers behind the shield
2018Year founded
4,800+Teams protected
2.4B+Threats blocked / yr
40+Countries served
Leadership
Meet the team behind Sentinel
Security veterans who've defended some of the world's most targeted networks — now building the platform they always wished they had.
Elena Castillo
Co-founder & CEO
Former incident-response lead. Has run breach response for global banks.
James Mensah
Co-founder & CTO
Detection-engineering veteran. Built threat platforms at hyperscale.
Aisha Khan
VP, Threat Research
Leads our threat-hunting team tracking advanced adversaries worldwide.
Robert Tanaka
VP, Compliance
Ex-auditor guiding customers through SOC 2, ISO, and HIPAA.
Compliance & trust
Held to the standards we help you meet
Sentinel is independently audited and certified, so the platform protecting your data is held to the same bar we help you reach.
SOC 2 Type IIIndependently audited
ISO 27001Certified
HIPAACompliant
GDPRCompliant
PCI DSSLevel 1
Join the teams defending with Sentinel
Whether you're a two-person team or a global SOC, we'd love to show you what unified protection feels like.