Cyber thieves transferred Bitcoins worth more than 100,000 euros, or $117,000, from a man's account while he was logged in on a restaurant's public wireless network, News.com.au reported.
The 36-year-old victim reportedly logged on to the unsecured network to check the value of his Bitcoin holdings in southeast of the city of Innsbruck. He later realized that $100,000 euros worth had been stolen.
Austrian police said in a statement on Wednesday that the Bitcoins were moved to an "unknown, non-traceable account."
It remains unclear whether the victim's account was already hacked before he logged on to the unsecured network, the police statement said.