NEXUS 7 GUIDEBOOK SECURE YOUR TABLET 78
IMPORTANT: Apps such as Email that support certicates
allow you to install certicates directly from within the app.
For details, see the Help or other instructions that come
with each app.
Work with CA certicates
If a certicate authority (CA) certicate gets compromised, or for
some other reason your organization doesn’t want to trust it, you
can disable or remove it. To do so, follow these steps:
1. Touch
Settings > Personal > Security > Credential stor-
age >Trusted credentials. The trusted credentials screen has
two tabs:
System displays certicate authority (CA) certicates that are
permanently installed in the ROM of your tablet.
User displays any CA certicates that you have installed your-
self, for example in the process of installing a client certicate.
2. To examine the details of CA certicate, touch its name.
A scrolling screen displays the details.
3. To remove or disable a CA certicate, scroll down to the bot-
tom of the details screen and touch either Disable for system
certicates or Remove for user certicates.
When you disable a system CA certicate, the button at the
bottom of its details screen changes to Enable, so you can
enable the certicate again if necessary. When you remove a
user-installed CA certicate, it is gone permanently and must
be re-installed if you want it back.
4. In the conrmation dialog that appears, click OK.