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Spanish police arrest 16-year old leader of hacker group in Europe-wide probe

By Thomson Reuters Oct 1, 2026 | 9:30 AM

BRUSSELS, Oct 1 (Reuters) – Spanish police said on Thursday they arrested a 16-year-old suspected to be the main operator ​of a hacker group called KillSec ‌as part of a Europe-wide probe into around 1,000 ransomware attacks in two years.

• The teenager arrested in the city of Alicante is a Romanian ‌national, ​Spanish police said in ⁠a statement

• He is ⁠suspected of being the “administrator” of KillSec, said a spokesperson for Europol, the EU’s law enforcement agency

• Police arrested two other ​people in their twenties, one in Britain and the other in Romania, the spokesperson ⁠added. An extradition request ⁠has been filed by Puerto ​Rico for the man arrested in Britain, she ​added

• A fourth person, a developer who ‌turned 18 in August and so was a minor when some of the offences were committed, has also been identified but ⁠not arrested

• KillSec “exploited software vulnerabilities and poorly secured access points, particularly to cloud storage,” to copy ⁠sensitive information, ‌Europol said in a statement

• KillSec ⁠then threatened the organisations with ​the ‌publication of their data unless paid. “The ​group ⁠obtained substantial ransom payments,” the statement said

• Police raided eight houses in Spain, Greece, Romania and Britain and seized evidence and assets

(Reporting by Inti Landauro and Emma Pinedo; Editing by ​Andrew Cawthorne)