Cyber attackers forced the official Winter Olympics website offline and disrupted TV services shortly before the opening ceremony in Pyeongchang , South Korea , according to officials . The Pyeongchang Games are certainly not the first to be targeted by hackers. The Russian Foreign Ministry denied the involvement of any domestic terrorists , and the International Olympic Committee spokesman said the organisation would not comment on who may have been responsible . The attack follows months of concern . The US Department of Homeland Security recently warned activists " may take advantage of the large audience to spread their message " , and warned officials that " mobile or other communications will be blocked " .
Cyber attackers forced the official Winter Olympics website offline and disrupted TV services shortly before the opening ceremony in Pyeongchang , South Korea , according to officials . The Russian Foreign Ministry denied the involvement of any domestic terrorists , and the International Olympic Committee spokesman said the organisation would not comment on who may have been responsible . The attack follows months of concern . The US Department of Homeland Security recently warned activists " may take advantage of the large audience to spread their message " , and warned officials that " mobile or other communications will be blocked " .