\Device\Nsi alert everywhere


I have used comodo several months and now upgraded to the latest version 3.8. I always see a lot of alerts in my log for Modifying \Device\Nsi. I have double checked my protected files and there is no such entry being protected. Why these alert keep popup?

BTW, almost every application have this behavior. e.g. Mozilla firefox. Is it a bug? Appreciate if anyone can explain to me what \Device\Nsi means.