An Indian nuclear power plant in the southern state of Tamil Nadu was hit by Windows malware in September, the Nuclear Power Corporation of India has acknowledged.

An infection of Windows systems by the Emotet malware was the precursor to the recent ransomware attack on Victorian hospitals, the Australian Cyber Security Centre says, as part of a warning that Emotet, which has been around since 2014, is being spread in Australia by malicious emails.

Windows ransomware has become a major problem for small and medium-sized businesses (SMBs), a survey by Datto, a company that provides IT solutions for managed service providers (MSPs), shows, with 91% of MSPs in Australia and New Zealand reporting attacks on SMBs in the last two years.