WhatsApp alleges that Israeli spyware company Paragon Solutions attempted to breach the devices of 90 users, including journalists. Paragon declined to comment on the report. WhatsApp sent Paragon a 'cease and desist' warning letter and stated that it will continue to protect people's ability to communicate privately. The users targeted were based in more than two dozen countries, including several in Europe. Paragon has developed a Trojan horse software called Graphite, which can extract intelligence data from encrypted chat apps.