A power cut that hit part of the Ukrainian capital, Kyiv, in December has been judged a cyber-attack by researchers investigating the incident.
The blackout lasted just over an hour and started just before midnight on Dec. 17.
A power cut that hit part of the Ukrainian capital, Kyiv, in December has been judged a cyber-attack by researchers investigating the incident.
The blackout lasted just over an hour and started just before midnight on Dec. 17.