The operation is just one of many information operations multiple nations have conducted in relation to Russia's war in Ukraine.

The government-linked hacking activity is both an intel-gathering effort as well as a money maker, researchers say.

Sites were restored Monday afternoon, the Israeli government said.

The initiative has been accused of racial bias. The new plan includes China along with other U.S. adversaries.

"We could not find any evidence that these tools were used previously, or attribute them to a specific threat actor," Check Point researchers said.

The pair of hackers was indicted in November.