Need help to figure what causing svchost.exe alerts

Can anyone help me to figure why this message appears regulary? Im sure there was no updates yesterday but i still got this alerts again. This has happened many times before. Could it be virus? Im using Bitdefender premium internet security.
Thanks!

Seems i can’t post image of alerts i get so i try to describe what i see:

Sept.5, three alerts:
11:10 am. Application info changed
The application publisher changed from empty value to “Microsoft Windows”.
[Host Process for Windows Services]
2:28 am. Application info changed
The application publisher changed from “Microsoft Windows” to empty value.
[Host Process for Windows Services]
2:28 am. Application info changed
The application is no longer signed.
[Host Process for Windows Services]

Sept. 4 got same 3 alerts:
10:38 am. Application info changed
The application publisher changed from empty value to “Microsoft Windows”.
[Host Process for Windows Services]
1:20 am. Application info changed
The application publisher changed from “Microsoft Windows” to empty value.
[Host Process for Windows Services]
1:20 am. Application info changed
The application is no longer signed.
[Host Process for Windows Services]

Here is the link to picture, remove spaces to get it working. Forum prevents me to post it correctly, sorry.
h t t p://aijaa.com/byzDcu

They all seem to be MS making changes to your system via svchost once changes are made it changes itself to=empty value " this doesnt need updates to do it MS has an additional installer as well as the “trusted installer”(windows module installer ) to do this . IF this isnt MS then that only leaves a hacker with back door access , be it official or not. Unless you are getting blocked from normal usage of your computer after these installations I dont think its a virus. I have seen this happen many times in the past but thanks to GW I can now watch it happen