Jan 30 (Reuters) – Russia’s domestic spy agency was likely responsible ‌for ​cyberattacks late last month on 30 Polish ‌renewable energy facilities, a manufacturing firm and a plant supplying heat for nearly 500,000 customers, ​Polish officials said on Friday. A report by Poland’s Computer Emergency Response Team on the incident – which a Polish minister said was the worst ‍of its kind in years – pointed to ​a team of hackers from Russia’s Federal Security Service, known by its Russian acronym FSB. The hacks were “purely destructive in nature,” the report ​said, comparing them ⁠to arson. “It is worth noting that this period coincided with low temperatures and snowstorms affecting Poland, shortly before New Year’s Eve,” the report said. The Russian aim was to irreversibly destroy data stored on devices within the combined heat and power plant but security software blocked that portion of the attack, according to the report. The Russian embassy in Washington did not respond to ‌a request for comment. OTHER ANALYSIS POINTS TO RUSSIAN MILITARY INTELLIGENCE Poland says its critical infrastructure …