The US and the UK on Monday warned of a global cyber attack targeting routers and other networking equipment, blaming Russian government-backed hackers for the campaign on government agencies, businesses and critical infrastructure operators, Reuters reported.

Washington and London issued a joint alert. The alert comes two months after the United States and Britain accused Russia of carrying out the damaging “NotPetya” cyber attack in 2017 that unleashed a virus that crippled parts of Ukraine’s infrastructure and damaged computers across the globe.

American and British officials said the attacks affected a wide range of organizations including internet service providers, private businesses and critical infrastructure providers. They did not identify any victims or provide details on the impact of the attacks.