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Independent since 2005

Security done by experts.
Accelerated with AI.

Security built for a world where attackers use AI. DEFION combines offensive security expertise with AI that continuously detects, validates, and challenges your defenses. You see what’s happening in minutes and act before attackers get in.

Active Defense means your controls are tested continuously, threats are hunted proactively, and response starts within minutes. AI makes it efficient. Experts make it effective.

Real analysts online in Zoetermeer and Barcelona. Average response under 5 minutes.
2.4M events analyzed847 anomalies identified12 threats blockedDetection time: <4 min

DEFION in numbers

20+
Years of experience
100+
Security experts
1,000+
Organizations protected
100,000+
Endpoints monitored
DEFION security experts
Why DEFION

Independent.
AI-accelerated.
20 years proven.

You get advice without a hidden sales agenda. DEFION doesn't sell products, only protection. That means our recommendations are always in your interest.

From boardroom to server room, 24/7 monitoring and AI-accelerated pentesting. One partner for your entire attack surface: IT, OT, and IoT.

About DEFION →
Meet the team

100+ specialists.
Two offices.
One team.

Zoetermeer and Barcelona. Real people, senior expertise. No offshore support, no call-center triage. When you call DEFION, you reach the engineer who can actually help.

Independent since 2005. Still driven by the people who founded it.

The DEFION team together in the mountains during our annual offsite
DEFION engineers collaborating over shared desks
Four DEFION colleagues hanging out in a mountain cabin
Three DEFION colleagues relaxing on a couch after hours
What this means for you

Faster detection.
Less noise.
Better decisions.

You only get alerts that matter. No flood of false positives, no overwhelmed security team. Our technology filters the noise, our experts make the calls.

The result: threats detected in minutes instead of days. And when it counts, there are always people ready who know what to do.

Alert within 4 minutes

No hours or days waiting for an alarm

Only what matters

Your team sees relevant alerts, not thousands

Pentest in 24 hours

First vulnerabilities same day, not after weeks

Experts who decide

No automated guesswork, real human judgment

THREAT INTELLIGENCE

What we see right now.

Week 21, 2026 · Updated May 22, 2026

Our TI team monitors 40+ sources 24/7. These are the most relevant threats for European organizations.

CVE · CRITICAL · NAS, OT/IT Infrastructure, Manufacturing, Mixed Mac/Linux (EU/NL)

Netatalk AFP server: 8 CVEs published simultaneously, CVSS 9.9 heap overflow enables remote code execution with root escalation, NAS and OT networks at risk

Netatalk: 8 CVEs including CVSS 9.9 RCE with root escalation on AFP servers. NAS devices and OT/IT environments at risk. Action: update immediately to Netatalk 4.4.3+ and scan for AFP services on port 548.

May 22, 2026 · Confidence: High

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Ransomware · HIGH · Manufacturing, Pharma, Construction, Healthcare (EU/DACH)

APT73 and Qilin strike 4 EU/DACH organizations in 24 hours: Friday deployment risk elevated for European manufacturing sector

APT73 and Qilin: 4 EU/DACH victims in 24 hours (Germany x2, Austria, North Macedonia). Friday deployment risk elevated for EU manufacturing. Infostealers (Lumma/RedLine) active on victim infrastructure. Action: elevate monitoring and verify offline backups.

May 22, 2026 · Confidence: High

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CVE · HIGH · Enterprise Endpoints, All Sectors (EU/Global)

BitLocker YellowKey bypass (NCSC-2026-0165): PoC publicly available, recovery environment weakness enables access to encrypted drives

BitLocker YellowKey bypass (NCSC-2026-0165): PoC now public. Recovery environment weakness allows access to encrypted drives. Affects all enterprises relying on BitLocker. Action: patch Windows endpoints immediately and audit unmanaged device inventory.

May 22, 2026 · Confidence: High

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security AI-proof?

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