Ukraine's power outage was a cyber attack - Ukrenergo

By Pavel Polityuk, Oleg Vukmanovic and Stephen Jewkes KIEV/MILAN (Reuters) - A power blackout in Ukraine's capital Kiev last month was caused by a cyber attack and investigators are trying to trace other potentially infected computers and establish the source of the breach, utility Ukrenergo told Reuters on Wednesday.     When the lights went out in northern Kiev on Dec. 17-18, power supplier Ukrenergo suspected a cyber attack and hired investigators to help it determine the