A Luxembourg national suspected of playing a key role in a large-scale Luxtrust phishing scheme has been arrested in Spain, the public prosecutor’s office has said.

The suspect was detained at the end of February with the assistance of the ENFAST network (European Network of Fugitive Active Search Teams) and handed over to Luxembourg authorities on Thursday evening.

An investigating judge issued an arrest warrant on Friday.

According to a statement issued by the public prosecutor’s office on Saturday morning, the individual is suspected of having “played a leading role in organising these fraudulent activities, in particular by coordinating the network’s activities and recruiting other participants to carry out the various tasks”.

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The investigation concerns phishing attacks using fake MyGuichet and Luxtrust websites. The alleged acts in question could be classified as fraud, computer fraud, theft, money laundering and participation in a criminal organisation, prosecutors said.

“While the exact extent of the facts attributable to the person arrested remains to be determined at this stage, it should be recalled that during the years 2024 and 2025, more than 700 complaints related to Luxtrust-type fraud were registered with the police, for a total loss exceeding €10 million,” the public prosecutor’s office said, reiterating that until a guilty verdict is delivered, the suspect, born in 2004, is presumed innocent.

(This article was originally published by the Luxemburger Wort. Translated using AI, with editing, adaptation and additional reporting by Kabir Agarwal.)

Source: Parquet de Luxembourg, 28.03.2026