According to the court documents, seen by TechCrunch, NSO had developed a suite of hacking tools to be used against targets using WhatsApp, capable of accessing private data on the target’s phone. The hacking suite was called “Hummingbird,” and two of the suite’s exploits were dubbed “Eden” and “Heaven.”

This suite cost NSO’s government customers — namely police departments and intelligence agencies — up to $6.8 million for a one-year license, and netted NSO “at least $31 million in revenue in 2019, according to one of the court documents.

Thanks to these hacking tools, NSO installed Pegasus on “between hundreds and tens of thousands” of target devices, according to a deposition by NSO’s head of research and development Tamir Gazneli.