BrApple

What are the possible sources of a brake fluid leak?

Last night the brake light started flickering and when I checked the fluid level was low. I normally keep the brake fluid at the max line.

I have to check over the car again but I have looked at the following locations:

brake hard to soft line joints and at the calipers - didn't note any evidence of fluid last night
the clutch master - the sound deadening material on the firewall was dry
brake booster - no signs of a leak down the front of the brake booster from the master

places that I will be checking:
the abs unit
clutch line
and I will check the other locations again


I have not noticed any change in the how the brakes and clutch have been working. I changed out the brake fluid when I got the car in 2010, level had not dropped until recently, but it has been awhile since I have checked it.

So where else should I check for leaks?