ICQ is an instant messaging computer program that was first developed and popularized by the Israeli company Mirabilis, then bought by America Online, and since April 2010 owned by Mail.ru Group.
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And yes, they mail.ru and icq.com have the same owner and they share the same servers.
Once again, the problem is following. Before 2010 ICQ was using P2P protocol to transfer a file between two clients. Now ALL files you send to someone over ICQ go the mail.ru servers whey they get stored permanently and are openly available to any 3rd person.
For example:
http://files.icq.net/files/get?fileId=E132656500FC40E99DC98575E53616D5 (mail.ru alias:
http://files.mail.ru/files/get?fileId=E132656500FC40E99DC98575E53616D5) is a file which was sent from one ICQ client to another one.
They just replaced 6-byte file ID's by 16-byte hashes (this is why that Java scanner doesn't work anymore) but the security problem was not fixed. The files you send via ICQ aren't safe. Everything you did send now stored at mail.ru servers without any protection.
1) They are collecting your data.
2) They do not protect it from others.
Do you see what I mean now?