There is an attack on a major social networking service Orkut which was flooded with "Bom Sabado" worm.
Today afternoon I saw every account was posting scrap some thing like “Bom Sabado” and those who are reading this scrap even in their profile, their cookies are also stolen and so they are also posting scrap automatically to their friend list same scrap.
The word "Bom Sabado" means "Good Saturday" in Portuguese. The script is running and scraps to your friends are going, status is changing, information is going away.
If your profile is exposed to this which will be anyway if you see this message in your orkut account please follow the steps:
Switch to the “older version” of Orkut.
Log out of Orkut.
Clean your browser’s cache and cookies.
Log in and change your password and security question.
If your account has been hacked, please see here :