KUALA LUMPUR/SINGAPORE (Reuters) – Malaysia is investigating an alleged attempt to sell the data of more than 46 million mobile phone subscribers online, in what appears to be one of the largest leaks of customer data in Asia. The data breach, believed to affect almost the entire population of Malaysia, was first reported last month by Lowyat.net. The website said it had received a tip-off someone was trying to sell huge databases of personal information on its forums. The country’s internet regulator is looking into the matter with police. The data included lists of mobile phone numbers, ID card numbers, home addresses, and SIM card data.