The incursion appears to be centred around a cryptocurrency scam. The tweets, which were fake, offered to send people $2,000 for every $1,000 they sent to a bitcoin address.
Anonymous hackers have brought the US city of Baltimore to its knees by seizing control of government computers, demanding bitcoin in return for releasing their hold over the systems.
Sindri Thor Steffanson managed to escape to Sweden on an Icelandair flight also carrying the prime minister
The decision could pile pressure onto the competition.
Virtual currency Bitcoin has soared to a new record high, more than doubling in value since the beginning of October.