A leading Hong Kong pro-democracy tabloid Thursday blamed Beijing for a massive cyberattack on its website, just days after a series of similar attacks on an online referendum on electoral reform. The website of Apple Daily, known for its critical stance on Beijing, suffered a blackout for several hours on Wednesday after what it described as a large-scale attack launched by sophisticated hackers. The attack comes at a time of heightened tension in the former British colony as pro-democracy activists worry that Beijing will backtrack on universal suffrage promised to Hong Kong in 2017. In a front page article headlined We will never backtrack, the Apple Daily accused Beijing of orchestrating the cyberattack.