In March, as tensions between Russia and Ukraine reached a level not seen since the Cold War, a separate battle was playing out on the two nations computer networks. A report released today by the US-based malware research firm FireEye shows a huge surge in Russian and Ukrainian malware activity as the crisis progressed, even as activity in the rest of the world declined. In March of 2014, callbacks to Russia jumped by 40 percent, giving it the fourth most in the entire world behind the US, China, and Hong Kong. Ukraine saw a similar jump, although it wasnt as pronounced as the Russian data.