Facebook was used in 32.5 per cent of cyber-bullying cases, including revenge porn and harassment, in Britain last year, prompting fears that the social media platform may be providing a safe haven for those who harass others, the media reported. There was also evidence of sexual abuse, disclosure of revenge porn, aimed at blackmailing or defrauding, and vicious online bullying campaigns. “Facebook is still not doing enough to protect its users from cyber-bullying and needs to step up its game,” The Sun quoted Clare Ambrosino from Parliament Street, a Britain-based innovative young think-tank, as saying on Sunday.