The "Chinese Software Developer Network" (CSDN), operated by Bailian Midami Digital Technology Co., Ltd., is one of the biggest networks of software developers in China. A text file with 6 Million CSDN user info including user name, password, emails, all in clear text leaked on internet.
The Download Link (use xunlei to download the file) of the File is available on various social Networks. NowChinese programmers are busy changing their password now.
Full archive of 104.9 MB (MD5 = b75678048d100600d3a6c648075636a7) available for Download Now : Here
Just did some data ming on CSDN leaked user data. Some interesting findings. Here are the results of Top 100 email providers form 6M CSDN user emails :
@qq.com, 1976190
@163.com, 1766919
@126.com, 807893
@sina.com, 351590
@yahoo.com.cn, 205487
@hotmail.com, 202944
@gmail.com, 186843
@sohu.com, 104735
@yahoo.cn, 87048
@tom.com, 72360
@yeah.net, 53292
@21cn.com, 50709
@vip.qq.com, 35119
@139.com, 29207
@263.net, 24778
@sina.com.cn, 19155
@live.cn, 18920
@sina.cn, 18601
@yahoo.com, 18452
@foxmail.com, 16432
@163.net, 15173
@msn.com, 14211
@eyou.com, 13372
@yahoo.com.tw, 10810
@huiseo.cn, 8493
@csoftmail.cn, 7121
@citiz.net, 6605
@vip.sina.com, 5378
@189.cn, 5004
@etang.com, 4236
@chinaren.com, 3973
@yahoo.com.hk, 3899
@neusoft.com, 2930
@wormsoft.cn, 2780
@sogou.com, 2567
@bdqnok-cp.com.cn, 2551
@live.com, 2528
@mail.china.com, 2177
@china.com, 2169
@mail.ustc.edu.cn, 2038
@huawei.com, 1921
@vip.163.com, 1882
@sjtu.edu.cn, 1881
@371.net, 1805
@10pig.com.cn, 1782
@zte.com.cn, 1681
@cp-bdqnok.com.cn, 1632
@company-mail.cn, 1555
@msn.cn, 1522
@netease.com, 1499
@uggsrock.com, 1363
@bjtu.edu.cn, 1342
@hotmail.com.tw, 1313
@owlpic.com, 1277
@siteposter.net, 1275
@x263.net, 1183
@2008.sina.com, 1180
@elong.com, 1172
@yahoo.co.jp, 1049
@chongseo.com, 1033
@bofthew.com, 1022
@tyldd.com, 992
@fudan.edu.cn, 987
@marketnet.com.cn, 963
@newline.net.cn, 955
@stu.xjtu.edu.cn, 931
@online.sh.cn, 928
@msa.hinet.net, 927
@zju.edu.cn, 878
@king.com, 870
@cmmail.com, 844
@123.com, 838
@56.com, 836
@cpok-bdqn.com.cn, 818
@zj.com, 804
@china.com.cn, 803
@fm365.com, 763
@71mail.com.cn, 751
@avl.com.cn, 748
@bdqncpok.com.cn, 720
@mails.tsinghua.edu.cn, 719
@bit.edu.cn, 693
@mail.nankai.edu.cn, 640
@lzu.cn, 622
@xnmsn.cn, 602
@wo.com.cn, 599
@ah163.com, 598
@yahoo.ca, 594
@263.com, 563
@eastday.com, 561
@stu.edu.cn, 559
@188.com, 556
@mobile.csdn.net, 539
@csdn.net, 533
@sian.com, 519
@ymail.com, 518
@km169.net, 490
@emails.bjut.edu.cn, 488
@pp.com, 483
@pchome.com.tw, 480
Security is important, especially for online service. And NEVER store user password in clear texts.