Distributed denial of service (DDoS) are among the toughest problems IT administrators have to face. On the one hand, they don’t involve the loss of corporate data. On the other they can temporarily put the enterprise out of business. Tim Turner, the London-based CIO for a social media blogging site called LiveJournal often faces DDoS attacks. In an interview with NetworkWorld U.S. he offered tips on how to handle them. Images from Shutterstock.com