I use firefox and open a lot of tabs, and set to reopen closed tabs when starting firefox. I logged out of firefox on my old machine and how can I log in to a new firefox my previous tabs will open again? And for firefox security, is there any function so that every time I start up, I have to enter a new password to be able to log into my account, so that other people can't access the pages I have logged in to? Thanks for reading.