The intruders, a hacktivist group that calls itself UGNazi, ultimately leaked a 1.7 gigabyte trove of data from the British web hosting firm that includes 500, 000 users accounts according to the UK tech news site the Register, including some number of credit card details.
Officials are attempting to make these tasks more manageable by requiring that users of the most prominent microblog service, Sina Weibo, register using their real name and identity-card number by March 16th.