US prosecutors have accused Donald Trumps former campaign manager Paul Manafort of attempting to get witnesses to lie for him in court. Prosecutors say he contacted witnesses by phone and an encrypted text messaging app in an attempt to secure materially false testimony. The authorities were seemingly able to read his end-to-end encrypted conversations. Does this suggest that there’s a backdoor in WhatsApp, or a flaw in its encryption code? Dont panic, says Graham Cluley.”]