The group took issue with a recent Mandiant analysis, it said.

The suspected Conti ransomware group spinoff employs a variety of attack methods, the notice warns.

The claim comes after Conti doubled its extortion demand to $20 million and called for the overthrow of the government.

The targeted systems are just two of dozens of the group's attacks in the last year.

Kaseya didn't specify how it obtained the tool, however.

REvil has risen among ransomware gangs, some experts say, with standout audaciousness and even dramatic flair.

The group had become increasingly prolific, but there were no clear answers for why Avaddon disappeared.

AXA joins CNA Insurance as a recent ransomware attack victim in the insurance industry.

AXA's decision was surprising only in how long it took to become an apparent industry first.