Young people with learning difficulties or volatile families most at risk, researchers say

As Dutch infection rates soar the motive behind riots on the streets this week remains unclear

Expected win after Navalny crackdown will be used by Kremlin as proof of support for Putin

Platform has sped up efforts to remove content that local regulators deemed illegal

Facebook-owned WhatsApp scrambles to deal with fresh competition

Company has developed a cloud-based platform to manage social interactions

Many Russians feel FSB is using national security as pretext to encroach on privacy

Encrypted platform refused to allow secret services to access users’ data

Lu Wei is first ‘tiger’ to be taken down since Communist Party congress, says watchdog

Frustration and confusion often permeates the state’s reaction to suspected Islamists

19-year-old Normandy attackers knew each other only four days before they struck

Telegram claims almost 5m users signed up in one day after news of Zuckerberg’s purchase