The five, who are aged between 15 and 26, were detained at 7am on Thursday at addresses in the West Midlands, Northamptonshire, Hertfordshire, Surrey and London, the Metropolitan Police Central eCrime Unit (PCeU) said in a statement. The suspects were taken to local police stations and remain in custody, the police added.
The Anonymous group of activists undertook a number of distributed denial-of-service (DDoS) attacks last year, using a tool called the Low Orbit Ion Cannon (LOIC) to try to overwhelm servers. The group successfully took down websites belonging to companies including Visa, MasterCard and PayPal, in protest at their suspension of donation-payment processing for the Wikileaks whistle-blowing operation.
Read more of "Anonymous DDoS swoop results in five arrests" at ZDNet UK.