Within hours of the US and Israel launching airstrikes on Iran two weeks ago, security professionals warned organizations around the world to be on heightened watch for destructive retaliatory hacks. On Wednesday, the predictions appeared to come true as Stryker, a multinational maker of medical devices, confirmed a cyberattack that took down much of its infrastructure, and a hacking group long known to be aligned with the Iranian government claimed responsibility. The first indications were...