Remember Operation Payback, when companies in and around the music industry saw their websites taken offline by Distributed Denial of Service (DDoS) attacks from angry anonymous (well, Anonymous) hackers? There’s now a trial in progress based on the attacks on Ministry of Sound and the IFPI, among others. It’s included details on the costs to these organisations, with a four-day attack on Ministry of Sound apparently costing the company £9k for additional staffing, software and loss of sales. Meanwhile, the IFPI spent £20k as a result of a longer attack on its website. That said, these losses pale next to the £3.5m bill for payments provider PayPal, which was the most high-profile target of Operation Payback. One man is standing trial in London, with three others having admitted their part in the attacks.