Over the last decade, the Kremlin's most aggressive cyberwar unit, known as Sandworm, has focused its hacking campaigns on tormenting Ukraine, even more so since Russian president Vladimir Putin's full-scale invasion of Russia's neighbor. Now Microsoft is warning that a team within that notorious hacking group has shifted its targeting, indiscriminately working to breach networks worldwide—and, in the last year, has seemed to show a particular interest in networks in English-speaking Western cou...