Hackers have stolen over USD 400,000 worth of cryptocurrency as they broke into the digital wallet of Stellar Lumen, one of the most popular virtual currencies in the world, according to media reports.
The hackers on Saturday hijacked the server that hosts BlackWallet, a web-based wallet application that stores lumens, and stole 669,920 from users' accounts, the BBC reported.
Although BlackWallet tried to warn users about the attack via forums, many continued to log in and lose money, the report quoted tech news site Bleeping Computer as saying.
The stolen amount has been moved to Bittrex, a virtual currency exchange, where it was likely to be converted into another currency to hide their tracks, the site claimed.
BlackWallet's creator, in a Reddit post, said he had since disabled his hosting account and websites.
"I am sincerely sorry about this and hope that we will get the funds back. I am in talks with my hosting provider to get as much information about the hacker and will see what can be done with it," the developer, who goes by the alias of Orbit84, said.
"If you ever entered your key on BlackWallet, you may want to move your funds to a new wallet," Orbit84 added.
A crypto or virtual currency is a type of money that is completely digital, like Bitcoin, and can be used to buy products and services.
Stellar is an open-source payments network focused on reducing poverty in the developing world. It says its lumens - which work using blockchain technology - make monetary transactions cheaper, quicker and more reliable, the BBC reported.
According to CoinMarketCap, a site that ranks the value of different crypto-currencies, there is USD 11.6 billion worth of Stellar Lumen in circulation, it added.