Following recent reports of San Francisco Municipal Transportation Agency (SFMTA) being hacked and asked for bitcoin ransom, another such incident has come up, and this time the victim is Valartis, a Chinese-owned Liechtenstein bank.

According to German newspaper Bild, blackmailers have told the bank’s customers that they must pay a portion of their account balances in digital currency bitcoin or else their personal details will be sent to financial watchdogs and media, Finance Magnates reported.

The hackers breached the Liechtenstein’s e-banking system this week and were able to get their hands on sensitive information on payment orders, parent companies and bank customers.

“The attacker did not obtain details of the account statement or asset data and possible affected customers have already been informed by the bank”, bank’s CEO Fong Chi Wah said in a statement, as quoted by Finance Magnates.

The bank’s clientele includes politicians, actors and high net worth individuals. Valartis is giving highest priority to the anonymity of its clients and is not responding to media requests.

Reports suggest that hackers are demanding the ransom in bitcoin to help preserve anonymity. Victims have been asked to pay 10 percent of their account balances in bitcoin before December 07.

Founded in 1998, Valartis Bank (Liechtenstein) AG is a fully licensed bank with headquarters in the principality of Liechtenstein. It is a subsidiary of Citychamp Watch & Jewellery Ltd., Hong Kong, a luxury goods group listed on the Hong Kong stock exchange. It is the sixth largest bank in Liechtenstein, managing assets of around 4 billion Swiss Francs.