Norton Internet Security Disappeared for some time

Hi Guys,

Couple of days ago a Scary and Funny thing happened in my PC


Scary thing that happened:

All of a sudden my Norton Internet Security disappeared along with Malwarebytes.


Funny thing that happened:

All of a sudden both of them came back.


I don't know whether my PC is infected or not but till date its working as it was working previously.

Does / Can / Will anyone know what could have happened?

regards