WhatsApp has claimed that some users were “possibly compromised” by spyware, according to a report by The Guardian. The Meta-owned messaging app went on to allege that nearly 100 journalists and activists were targeted in the attack.

WhatsApp says that civil society workers and journalists on its platform were the targets of hacks by the Israeli spyware company Paragon Solutions.

Cancellato is the first target to come forward following the disclosure of a hacking campaign carried out using spyware allegedly made by Paragon Solutions, as WhatsApp claimed on Friday.