What Europe’s security services reported this year
Four European states published threat assessments in the past year, and the EU published its consolidated count. They are written by different services, in different languages, under different governments. Read together, they are the closest thing that exists to a measured picture — and they are more careful than most of the commentary built on top of them.
The EU count
“In 2025, 45 terrorist attacks were reported by 10 Member States, while 486 suspects were arrested for terrorism-related offences across 21 Member States. Jihadism accounted for 24 of the reported attacks and 347 of the reported arrests.”
Europol, EU Terrorism Situation and Trend Report 2026 — Key Findings
Two things are worth holding at once. Jihadism accounts for slightly more than half the attacks, and slightly more than seven in ten of the arrests. It is the largest single category in the EU’s own count — and it is not the whole of it. The other 21 attacks and 139 arrests belong to other categories, and this archive does not quietly fold them in.
Germany, in numbers
Germany’s domestic intelligence service is the only European service that publishes a standing headcount for the Islamism spectrum:
Islamism potential estimated at 28,645 persons for 2025 (2024: 28,280), of which 9,110 assessed as violence-oriented.
Bundesamt für Verfassungsschutz, Verfassungsschutzbericht 2025 — summary of the Islamism chapter
The number that matters here is the second one. The service distinguishes the broad spectrum from the violence-oriented segment, and the segment is roughly a third of it. A citation that quotes 28,645 without the 9,110 has told you less than the report did.
Denmark and the Netherlands, in words
Denmark’s Centre for Terror Analysis published its 2026 assessment with intelligence processed to 20 April 2026:
“Overall, CTA assesses that the terrorist threat to Denmark remains at the level of significant. … the terrorist threat from militant Islamists remains at the level of significant.”
PET / CTA, Assessment of the Terrorist Threat to the Kingdom of Denmark 2026 — Preface
The Dutch coordinator holds its national level one notch below the top of a five-point scale:
“Terrorist threat level for the Netherlands remains at level 4: ‘substantial’ … Jihadism continues to pose a significant and persistent threat.”
NCTV, Terrorist Threat Assessment for the Netherlands, June 2025, p. 3
What cuts the other way
An archive that only collects the rising lines is a campaign, not a record. Sweden’s security service moved in the opposite direction:
National terrorist threat level lowered from High (4) to Elevated (3) on a five-point scale.
Säkerhetspolisen, 23 May 2025
One European service lowered its national threat level in the same period in which others held theirs steady. That belongs in the record exactly as much as the rest.
Why the services are worth reading directly
Every document above is written by people who will be held to it. They hedge where the evidence hedges, they publish their scales, and they date their cut-off. The Danish assessment states the day its intelligence stops; the Dutch one publishes the five-point scale it is scoring against; the German one separates the spectrum from the violence-oriented segment rather than reporting one number.
That is the standard this archive tries to meet, and the reason every entry in the register carries the quote, its location in the document, and the date the link was opened. You are meant to check it.