National Police has arrested four members of the Anonymous collective in Spain as part of an international operation against cyber-crime. Two of them are currently in prison thought to be behind DDos attacks, and the other two have been released. They are allegedly linked to attacks on the UPyD webpage, as well as for revealing personal data from the GEOS security personnel. A man known as ‘Thunder’ or ‘Pacotron’ was F.J.B.D. arrested in Málaga, J.M.L.G. known as ‘Troy’ was arrested in Madrid, J.I.P.S was also arrested in Madrid with a 16 year old close collaborator, J.M.L.G. thought to be part of the international hacking group known as ‘Sector 404’. 25 computers have been impounded along with hard discs and other storage devices, following four searches in Spain and these are now being analysed. The case has resulted in two servers being blocked in Bulgaria and the Czech Republic and has developed with the help of Interpol.