Changing the password or email orkut.
And strongly recommended to change the password orkut every 2 months or after your anti virus detected a virus or spyware to reduce the chances of theft of passwords. There is no need to change the email unless suspicious that someone will esatr using it or you tebha exchanged e-mail. Each year the email exchange can also enhance security. Simply enter the home of google and in the upper right this writing login. Log then go to my account and change your password or email. For orkut just go ate settings / configurations of your google. And change the data you want.