istanbul desktop recoder from muon

[Guest]

Hi guys,
This day I've tried to install istanbul desktop recorder from the muon software center, but when I pressed the install button, was opened a pop up window with this similar message ( I translate from italian ):
It's impossible authenticate this software. Warning: Installation of not verified software is a risk of security, because her presence can be a manipulation signal.

What I can do for this problem ? It's a malware ?

[OneLine]

https://lists.ubuntu.com/archives/ed...er/005737.html

For security purposes, mirrors are usually signed so that when you're on
a connection that can't be completely trusted, you'll know that the
server you're getting packages from is the one that you initially added...

If the authentication information is missing:



With the apt-get:

...WARNING: The following packages cannot be authenticated!
copyq
Install these packages without verification [y/N]? ...

Authentication warning & fix:
- http://askubuntu.com/questions/75565...ntu-repository
- http://www.cyberciti.biz/faq/linux-a...authenticated/

Ubuntu Software Management:
- https://help.ubuntu.com/community/SoftwareManagement
- https://help.ubuntu.com/community/Repositories/Kubuntu

[Guest]

Problem solved, thanks!!