Yahoo! Messenger allows users to archive, print, and save messages, so that they may retain records of their instant messaging communications. Please be aware that even if you choose not to save your messages, those with whom you have conversations may choose to do so.
If you are using the Windows version of Yahoo! Messenger, you can set Yahoo! Messenger to remember your ID and password when you log in. If you share a computer and don't want anybody else to access or use your account, make sure you have not checked the box labelled "Remember my ID and password." If the box stays unchecked, others may use your account.
In addition, it is possible, although rare, for someone to capture your Yahoo! Messenger login name and password information as they pass through your Organization's network or as they cross the Internet.
Always remember to "Sign Out" at the end of your session. You should also periodically change your password and check your account information, to make sure it is accurate, and that no one has altered your account.