South Australian Premier Steven Marshall has reassured residents that no data was compromised after the state’s contact tracing app was hacked. “There has been no hacking or compromise of data on the mySA GOV app, and there has been no compromise of data that we use for our COVID check-in,” he told reporters. “What we did have was a very swift response from the people in the IT section of the Department of Infrastructure and Transport (DIT),” he added. “They locked down the system.” The premier said the team saw the hack “coming in very quickly,” and the system was shut down within seconds. Last week, the DIT revealed that several user accounts had been accessed by a third party, who obtained the passwords while hacking a separate website. “The accounts could be accessed because account holders had used the same or a similar password for their mySA GOV account …