Kyivstar, Ukraine’s main provider of telecommunication services, says that it’s been the target of a ‘powerful hacker attack’. The attack left customers without mobile or internet signal and caused the air raid sirens in the northeastern city of Sumy to malfunction as a result of the outage. Kyivstar has over 25 million mobile customers and […]
The post Ukraine’s Largest Telecommunication Provider Paralysed by a Massive Cyberattack appeared first on Heimdal Security Blog.