— JUST TWO AND A HALF weeks after the Geneva summit came the moment of truth: A Russian-speaking ransomware group called REvil that used similar techniques to those of DarkSide struck. This time the group had gained access to a software company named Kaseya that served, indirectly, thousands of small businesses around the world. The damage from this REvil attack was limited, in part because Kaseya was able to get hold of a decryption key and shared it widely. But REvil was clearly emboldened—it was now responsible for a quarter of all the ransomware attacks emanating from Russian soil toward
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