Talk to an engineer.

Tell us what you need tested or protected. A principal (not a sales rep) replies within one business day.

Under attack right now?

Our incident response line is staffed 24/7/365, retainer or not.

Call +351 21 055 5911
Enquiry

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We reply from @sentinel-cyber.io addresses only. PGP key on request.

Lisbon HQ

Rua do Alecrim 47, 1200-014 Lisboa

Austin

500 E 4th St, Suite 310, Austin TX 78701

Office hours

Mon–Fri 08:00–19:00 WET / CST · SOC 24/7

Small team meeting in a modern office
FAQ

Before you ask.

Do you only work with large enterprises?

No. About 40% of our clients have fewer than 300 employees. Our Monitor tier exists precisely for scale-ups that need a real SOC without hiring one.

Will a penetration test break production?

We agree rules of engagement up front, avoid destructive payloads and throttle traffic. Most clients test against production with zero downtime; we can also work in staging.

How fast can you respond to an active incident?

Retainer clients get a responder on a bridge call within 15 minutes, any time. Non-retainer emergencies are handled on a best-effort basis, usually within 2 hours.

Where is our data stored?

Telemetry stays in your chosen region: EU (Frankfurt) or US (Ohio). We are SOC 2 Type II and ISO 27001 certified, and we sign DPAs as standard.

Can you help with SOC 2 or ISO 27001?

Yes. Our GRC team runs gap assessments, writes policies, and collects evidence with you. We are not your auditor, which keeps the opinion independent.