Badware in the partner repository?

[Fred .]

In 'main' and 'universe' we have strict rules what is allowed.
There are lots of criteria that the software must be free open source software.

For the 'partner' repository are there any criteria?
I don't want to use the 'partner' repository if it means I get get
badware or malware.

Some software developers and publishers do bad things.

Ubisoft Uplay DRM Found To Include a Rootkit
http://games.slashdot.org/story/12/07/30/1214206/ubisoft-uplay-drm-found-to-include-a-rootkit

Are rootkits allowed in the Ubuntu partner repository?
How about adware, spyware, phone-home, malware, etc?

Many software do undesirable things such as:
- Change desktop wallpaper background
- Add shortcuts to the desktop
- Add unwanted browser addons/extensions/toolbars
- Change the web browser startup homepage

Are software in the partner repository allowed to tamper with binary
Ubuntu system files?