Day Two of the International Dota 2 Championships was marred by a Distributed Denial of Service (DDoS) attack.
Hackers disrupted the Upper Tier match between Evil Geniuses and compLexity Gaming, suspending the contest for several hours.
A DDOS attack is a form of hack that overloads a server with a large number of false requests, causing it to crash.
The outage was initially attributed to technical difficulties, but the event's commentators later confirmed that hackers were to blame, according to reports on social media.
Now into Day Three, the International Dota 2 Championships is one of the biggest events on the eSport calendar with a record prize pool of $18m (£11.5m).
