Vijandren writes:
Following up on our report on 19th October, we can now confirm that roughly 46.2 million mobile phone numbers from Malaysian telcos and mobile virtual network operators (MVNO) have been leaked online.
The leak includes postpaid and prepaid numbers, customer details, addresses as well as sim card information – including unique IMEI and IMSI numbers.
Time stamps on the files we downloaded indicate the leaked data was last updated between May and July 2014 between the various telcos.
Read more on Lowyat. They are right to express concern about the number of people who may have already acquired these files, as even after this was publicly reported on their site, the files remained available online if you knew where to look, and were still available online as of two nights ago, the last time this site checked.