Not sure... like most technical details with CIS, Comodo does not explain - despite many inquiries regarding various technical details on the Comodo forum - even from Moderators and die-hard fanboys.
@yesnoo - my take is that HIPS disabled controls Notifications, Sandbox alerts... and purportedly... policy violation alerts. What exactly those policy violation alerts are exactly... what they look like, their content, which module generates them etc ... I do not know. It seems nobody knows.
@yesnoo - I think you might be the only one.
I am not an expert user but learned quite a few things from various forums but still not an advanced users when it comes to all the technicalities.
But I have followed & used Comodo right from version 2 & was a regular Comodo forum visitor.
Devs have always tried to make CIS easy & suitable for average users by minimizing alerts & still providing excellent protection & at the same time advanced options for experts.
When AutoSandbox default was "Partial Limited"...sometimes installing programs in sandbox there use to be HIPS alerts...not much only 2-3 type of alerts like registry, COM, etc... Later they enhanced autosandbox & those HIPS alerts were taken care of i.e with new enhancements users will not get those HIPS alerts & CIS will take the decision automatically to allow/block those actions.
Previously I had a spare system & use to test security software for personal reasons. And I tested CIS quite a few times after the enhancements to the autosandbox & never got those HIPS alerts or any HIPS alerts with CIS defaults.
Now AutoSandbox default is "Full Virtual". I have tested this too & have watched quite a few Youtube tests of CIS defaults against malware. In my tests & those Youtube tests too I never saw a single HIPS alert with CIS defaults.
So I quite believe CIS default will not generate HIPS alerts & disabled HIPS in default settings is used passively to help sandbox.
I would have asked these queries on Comodo forum. But now I dont visit the forum much & dont post much queries especially about CIS as not much reply nowadays on Comodo forum. Queries goes unnoticed & after sometime you too forget what queries you posted on what section. And sometimes I dont want to file a standard format for simple query or bug.