Facebook filed a lawsuit against Israeli mobile surveillance firm NSO Group on Tuesday, alleging that the company was actively involved in hacking users of its messaging service, WhatsApp.
Earlier this year, it was discovered that WhatsApp had a critical vulnerability that attackers were found exploiting to remotely install a spyware called Pegasus on targeted Android and iOS devices. The spyware was reportedly developed by NSO Group, a company from Israel.
The vulnerability allowed NSO to silently install the spyware app on targeted phones by merely placing a WhatsApp video call with specially crafted requests, even when the call was not answered. After Pegasus was on the victim’s device, it accessed their text messages, emails, WhatsApp chats, contact details, calls records, location, microphone, and camera.
Pegasus is NSO’s signature product that has previously been used against several human rights activists and journalists, from Mexico to the United Arab Emirates two years ago, and Amnesty International staffers in Saudi Arabia. Though NSO Group always claims it legally sells its spyware only to governments, WhatsApp head Will Cathcart says the company has evidence of NSO Group’s direct involvement in the recent attacks against WhatsApp users.
NSO Group Violated WhatsApp’s Terms of Service
In a lawsuit filed, in U.S. District Court, Facebook (parent company of WhatsApp) said NSO Group had violated WhatsApp’s terms of services by using its servers to spread the spyware to approximately 1,400 mobile devices during an attack in April and May this year. In a blog post, WhatsApp said:
This attack was developed to access messages after they were decrypted on an infected device, abusing in-app vulnerabilities and the operating systems that power our mobile phones.
Defendants (attackers) created WhatsApp accounts that they used and caused to be used to send malicious code to Target Devices in April and May 2019. The accounts were created using telephone numbers registered in different counties, including Cyprus, Israel, Brazil, Indonesia, Sweden, and the Netherlands.
The targeted users include attorneys, journalists, human rights activists, political dissidents, diplomats, and other senior foreign government officials. WhatsApp said it sent a warning note to all the affected 1,400 users impacted by this attack, directly informing them about what had happened.
WhatsApp has sued NSO Group under the United States state and federal laws, including the Computer Fraud and Abuse Act, as well as the California Comprehensive Computer Data Access and Fraud Act. The lawsuit read:
The complaint alleges they violated both U.S. and California laws as well as the WhatsApp Terms of Service, which prohibits this type of abuse
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