Spanish police say four self-proclaimed members of Anonymous are in custody after allegedly carrying out several cyberattacks on public authorities in the wake of the 2024 DANA floods.
Guardia Civil officers arrested two of Anonymous Fénix’s “most active members” last week in Ibiza and Móstoles, Madrid. These bring the total to four, following the arrest of two group leaders in Alcalá de Henares, Madrid, and Oviedo, Asturias, in May 2025.
Suspected Anonymous Fénix member arrested in Spain. Image courtesy of Guardia Civil
All four were detained for carrying out distributed denial-of-service (DDoS) attacks on government ministries, political parties, and public institutions, which they claimed were “responsible for the tragedy” of the floods.
The police declined to name any of the four members, but a court order allowed the seizure of Anonymous Fénix’s X profile and YouTube account, and officials closed its Telegram account.
After spinning up as an Anonymous offshoot in 2023, the group was most active on X and Telegram, reposting news about the natural disaster. By 2024, it was using the platforms to recruit members to join its hacktivism.
The scale of Anonymous Fénix’s operation was not large if its social media following is anything to go by. Its X account had fewer than 700 followers and Telegram channel subscribers numbered in the dozens, reported Spanish newspaper El País, which saw the channels before they were pulled offline.
Guardia Civil did not specify any of the public institutions that were attacked, but said several of the attempts on government websites were successful.
Originating around 2003 on 4chan, Anonymous and its adoption of Guy Fawkes masks quickly became synonymous with hacktivism.
The disparate group of global volunteers helped establish Anonymous as a leading hacktivist group, thanks in large part to successful attacks on the likes of Sony and PayPal, a long-running campaign against Scientology, and in the early years, large-scale pranks on websites like Habbo Hotel.
Its presence today is diminished compared to its heyday, although splinter groups like Fénix still pop up occasionally. ®