One of the world’s most secure email services has been caught up in a sophisticated cyber attack aimed at investigative journalists and other experts who are probing Russian intelligence activities.
Those targeted have used Swiss-based ProtonMail to share sensitive information related to their probes of Moscow’s military intelligence directorate, the GRU. Its agents have been accused of complicity in the downing of MH17 over Ukraine in 2014, and the attempted assassination of Sergei Skripal and his daughter last year in Britain.