windows 8, always request passwords for apps

JaneWillow

Hiya. I'm by no means technical so excuse me for asking these questions. Someone gave me a 'Surface' as a goodbye present for a job I worked. I'm loving it, so much faster than my old laptop.

Just two questions:
- I'd like for my surface to always request a password when I open an app (like twitter, dropbox, Facebook). How can I do this? My account is password protected, but I think it's a bit stupid that one password can give someone access to all my apps.
- Which virusscanner should I install? (a free version please)

Thanks for your help,
Jane

Overheal

for apps, no.

going to twitter.com, facebook.com yes just don't check the box 'remember me'

JaneWillow

Thanks overheal.