Yahoo! massenger boot protect tips

1.You should be up to-date your messenger software.
2.You can use yahoo tunnel by not direct use yahoo. you can search from "yahoo tunnel" to get it.
3. Sign in with invisible mode.

4. Messenger > Preferences >Go -->"Ignore List" then select "Ignore anyone who is not on my Messenger List" then click -->"Apply".
5. Messenger > Preferences > Go-->Privacy -->unchecked two option.-->Allow Yahoo! websites to show when I am online-->Show me as Idle if I don’t use the computer for 15 minutes
6. Messenger > Preferences > Alert & Sounds --> unchecked "Enable alert sounds" option.
7. Messenger > Preferences > Keep disable "Display Image" option.
8. Messenger > Preferences > Chat --> select "Ignore chat invitations"
9. Messenger > Preferences > disable "Content Tabs"
10. Messenger > Preferences > Go "File Transfer" --> select two option "Never accept files from anyone" and "Never allow others to download files from me"
11. Messenger > Preferences > "Messages" and same with below picture.

From now anyone can not boot your messenger. But one problem that is if you want to private chat with anybody at first you should be add his ID to your contact list.