Hackers have compromised the website of the city of Johannesburg, South Africa, and demanded ransom in Bitcoins (BTC).
The city announced the hack on its official Twitter account on Oct. 25. The city wrote that it had “detected a network breach which resulted in unauthorised access to its information systems.” As a result, the breach affected several customer-facing systems — hardware or software customers interact with directly, such as user interfaces and help desks. The breach has frozen those operations.