Cybersecurity firm Huntress Labs had earlier said in a Reddit forum that it was working with partners targeted in the attack and that some 200 businesses “have been encrypted.”

Ransomware attacks typically involve locking away data in systems using encryption, making companies pay to regain access.

A US IT Company, Kaseya, was forced to shut down its servers after a series of ransomware attacks on Friday. 

The company said that it limited the effect to a small percentage of its customers who use its signature VSA software.

According to the company, less than 40 businesses worldwide were affected by the attack.

VSA, the company’s flagship offering, is designed to let companies manage networks of computers and printers from a single point.

The company became aware of a possible incident with VSA at midday on the US east coast and “immediately shut down” its servers as a “precautionary measure,” it said.

Kaseya also “immediately notified our on-premises customers via email, in-product notes, and phone to shut down their VSA servers to prevent them from being compromised.”

“We believe that we have identified the source of the vulnerability and are preparing a patch to mitigate it,” the company said in a statement