GCHQ has suggested that tech firms' communication services should be able to surreptitiously add intelligence agents to conversations or group chats
The outage affected Facebook, Ingstagram, WhatsApp and Messenger users globally
GCHQ demand for backdoor key to all encrypted communications criticised by tech giants in open letter
London selected by Facebook as it hosts a large number of people from countries where WhatsApp is popular
BGP protocol shenanigans ruled out as Facebook admits outage was caused by its own engineers
Longest downtime in Facebook's history caused by BGP leak, according to Netscout
Facebook must acquire consent to collect and combine personal data from different sources
Spyware linked to Israeli cyber arms dealer NSO Group used in Amnesty International attacks, claims charity
Users will be warned when they see or send a suspected spam message
WhatsApp Business is available for free in the UK now