Russian military hackers tried and failed to attack Ukraine's energy infrastructure last week, the country's government and a major cybersecurity company said Tuesday. The attack was designed to infiltrate computers connected to multiple substations, then delete all files, which would shut that infrastructure down, according to Ukraine's summary of the incident. ESET, a Slovakia-based cybersecurity company working to help secure Ukrainian infrastructure, said in a summary of the attack that it was conducted by the same arm of Russia's military intelligence agency, GRU, that had previously successfully executed similar attacks in 2014 and 2015. In both of those incidents, some residents of Kyiv temporarily lost power. This attack had been planned for at least two weeks, ESET said. Since Russia began its invasion in February, Ukraine hasn't been hit by any attacks as visibly destructive as those previous hacks of Kyiv energy companies. But Ukraine has faced multiple so-called "wiper" attacks, including ones that have targeted computers in Ukraine's government, financial institutions and internet service providers. Those attacks also look to mass-d . . . read the full article here.