The case is believed to be the first time that government officials in any country have been jailed for doing business with NSO Group.

Facebook alleged that King & Spalding’s past work defending WhatsApp gave NSO Group an unfair advantage.

NSO Group has used American-based servers to spy on WhatsApp users, Facebook and WhatsApp lawyers allege in court documents filed Thursday.

Amnesty International says it's a "worrying" escalation in the intrusive surveillance of vulnerable groups.

Facebook claims NSO Group was a no-show, NSO Group says Facebook is lying.

It is the latest twist in a broader, high-stakes legal battle between Facebook and NSO Group,