Yahoo web-mail users might contact a new virus called JavaScript, for which a patch was not launched. Only the e-mail addresses @yahoo.com or @yahoogroups.com of the victim’s contact list are affected. „The worm” travels through Internet, being spread in the moment when the Windows user accesses Yahoo. As there is no patch yet, the specialists recommend to users to actualize their anti-virus definitions and firewall signatures in order to block all e-mail messages sent from av3@yahoo.com". Once executed, the virus sends itself further to contacts of Yahoo Mail of the infected user. It collects these addresses and sends them further, to another server. Infected e-mail messages usually have the message "New Graphic Site" and are changed in order to seem coming from av3@yahoo.com.