Russian-linked hackers blamed for the massive cyberattack on the US last year have been targeting hundreds of companies and organizations in its latest wave of attacks on US-based computer networks — as the White House dismisses the incident as “unsophisticated, run-of-the-mill operations.”.

In a blog post Sunday, Microsoft said Nobelium — the Russian-based agency behind last year’s widespread SolarWinds attack — has been targeting cloud service providers and technology service organizations in a bid to obtain data.

This time, it is attacking a different part of the supply chain: resellers and other technology service providers that customize, deploy and manage cloud services and other technologies on behalf of their customers,” Microsoft said in its blog post.

A Biden administration official told the Times the latest attacks were “unsophisticated, run-of-the-mill operations that could have been prevented if the cloud service providers had implemented baseline cybersecurity practices.”