CEO Shalev Hulio tells US court his customers are only sovereign states or their intelligence and law enforcement agencies.
WhatsApp sued NSO in October after finding evidence that the hacking firm had abused a flaw in the app's popular chat program to remotely hijack hundreds of smartphones.
Kushner reportedly used WhatsApp, which is the app that bin Salman allegedly used to hack Bezos several months before the assassination of journalist Jamal Khashoggi.
MBS and Bezos were reportedly having a conversation on WhatsApp when a malicious file was sent to the Amazon owner's phone.
The popular messenger appears to be glitching.
The case has huge implications for national security and human rights.
The WhatsApp service makes it possible for patients to request and receive information 24 hours a day as well as facilitate secure document transfer - all done with one easy phone call.
Check Point said its findings were disclosed on August 28 to the social media giant, which quickly developed a fix to resolve the issue.
“Blocking our private accounts is a hurtful and unjust move by Facebook,” the statement said. “The idea that personal data was searched for and used is very disturbing to us.”
Sending a "specially-crafted MP4 file to a WhatsApp user" could allow hackers to access information on users' phones.