Sadly, certain sw makers seem to think that useless vague information like that is 'helpful' - they simply can't design good exception handling code. Also they may be fearful that giving what info they DO have during code execution will be confusing for the level of user they market at.

It may just be that the unnamed 'security software' is not up to date with what Firefox is doing, and sees things it does not have in its database of 'good things to accept' - perhaps an update is needed (you may have the latest issued update). Firefox and other 'GNU' stuff is often seen as an 'annoyance' as the number of users is seen as too small to worry about, to generate new update specifically. This can also be a good reason to hold back rapid updates of certain utilities.