These same sorts of vulnerabilities exist in email in general, as well as in downloading files through a web browser. Another twist on this file transfer exploit is if you, the ICQ user, allow downloaded files to automatically open themselves, the back-door programs could be installed automatically without your ever having to touch the files at all. We strongly recommend that you do not use ICQ or other instant-messaging programs. All of these instant messaging programs have security holes and related problems. Use standard email for your communications.
Email has much fewer security holes and can be safeguarded more easily.
There are modified versions of ICQ on the Internet that act like the regular ICQ program, but run back-door services as a part of their installation. Set your security in ICQ to allow only the transactions you want. Require your authorization for people to add you to their contact lists. You'll need to type in your password more frequently, but your ICQ environment will be more secure. Do not save your password.