Messaging giant WhatsApp won a landmark ruling Friday against the best-known maker of spyware when a federal judge in California ruled that NSO Group had hacked into the Meta unit’s systems by sending malicious software through its servers to more than a thousand targeted phones.District Judge Phyllis Hamilton granted WhatsApp’s motion for summary judgment against Israel-based NSO, finding in the five-year-old case that it had violated the U.S. Computer Fraud and Abuse Act with the pernicious sp...