Australian Cyber Security Centre (ACSC) spam calls are scams where criminals impersonate government officials to trick you into giving money or remote access to your computer, often claiming your device has malware or is used for illegal activity. The ACSC will never ask for passwords, bank details, money, or request you download remote access software like TeamViewer or AnyDesk. If you receive such a call, hang up, don't click links, and verify any concerns by calling the official ACSC number, 1300 CYBER1 1300 292 371), from a trusted source.