The simplest way to set up ICQ Bomb is to send out massive amount of messages to others by different ICQ UNI or same person. Hackers can also make use of your ICQ No. to send message or even bombs to your net friends. (However the event will be disclosed whenever the recipients reply that message.) So dont depend on ICQ message too much Apart from messages, you will receive system messages and authorization messages. For example, you will receive endless and disturbing system messages every time when online if someone insists to add you in the contact list. Sometimes ICQ Bomber can make you turn ICQ off and shut down due to error found. Often victims often re-connect to switch on ICQ again Sometimes ICQ Bomber can delete your contact list too! So be sure that you always back-up your contact list by using QCI 2000 for restoring data.