(CNN) -- Microsoft says an established group of hackers has launched a new global cyberattack on more than 150 government agencies, think tanks and other organizations.
According to Microsoft, the group which it calls "nobelium," targeted 3,000 e-mail accounts it got through an e-mail marketing account used by the U-S agency for international development.
From there, the hackers sent phishing e-mails that tricked recipients into clicking a link the e-mails said contained documents from Former President Donald Trump on election fraud.
What users really downloaded by clicking that link was software that gave the hackers access to their computers through a backdoor.
Microsoft says more than a quarter of the targeted computers belong to people involved in international development, humanitarian, and human rights work in at least 24 countries.
The company believes the hackers are part of the same russian group that carried out last year's attack on software vendor solar-winds.
That cyberattack targeted at least nine federal agencies, and is considered one of the worst data breaches to hit the u-s government.
