Here are some of the steps which makes your Orkut account safe,
1) Never give remember option, when you use other's computer of internet cafe
2) When you are signed in your orkut account, please paste any URL and go to other website, using the Orkut page.
3) Never give your Orkut ID and Password to other sites.
4) Google also asks to follow this step
"Never get excited to see a site claiming to have 1000 cool orkut tricks for which you have to just log in to your orkut account. Don't trust that site. That's a hacking site."
5) Never click any unknown links or unknown scraps
6) Never add any unknown contacts.
7) It is safe to log out of Orkut ( any account) once you finished using it.
These are some of the safety steps, which will help you to secure your Orkut account from hacking.
For more information:
Click Here - How to save Orkut account from Hacking?