The San Francisco internet services company's top customers include IBM, the text and chat app Discord and the Chinese internet company Baidu.

Austin Thompson gained notoriety using the Twitter handle DerpTrolling to announce his online attacks, which downed game servers around the world for hours on end.

Operators of the new variant have gone after devices that are popular with businesses, such as wireless presentation systems, according to Unit 42.

Sergiy Usatyuk and a co-conspirator enabled attackers to use only a web browser to launch a DDoS attack capable of knocking target sites offline.

Ukrainians go to the polls on March 31; analysts have warned that Moscow could attempt to interfere.

One of the accused is already serving time, while the other was arrested Tuesday morning.