About us

Security people, running security properly.

Fjornsen exists because most organisations do not need more tooling — they need a team that owns the outcome. We operate the detection, hardening and response layer so your engineers can build.

Talk to our team
Fjornsen security team reviewing threat posture in a blue-lit office at night

What we hold ourselves to.

Clarity over noise

We report what changed and why it matters — never a dashboard of unexplained red.

Defence in depth

Edge policy, transport security, application hardening and monitoring reinforce each other.

Always on

Checks run continuously with retained, reproducible history you can audit at any time.

One accountable team

No handoffs between vendors. The people who baseline your posture also defend it.

Abstract glowing blue padlock connected to circuit traces on a black background

Engineering principles

Assurance written down, not implied.

  • Least privilege on every internal system, reviewed quarterly
  • Encryption in transit (TLS 1.3) and at rest (AES-256-GCM)
  • Documented change records for every policy we apply on your behalf
  • 72-hour breach notification commitment written into every contract
Read our ISO 27001 alignment

Our story

Built from real incidents.

  1. 2019

    Founded by incident responders tired of dashboards nobody could act on.

  2. 2021

    Behavioral detection engine deployed across the first regulated customers.

  3. 2023

    ISMS aligned to ISO/IEC 27001:2022 with documented Annex A control mapping.

  4. 2026

    Counter-intelligence tooling, forensic evidence packaging and 24/7 coverage.

Blue fibre optic cabling in a dark data centre aisle