[Q] Knox counter? topic

Hello guys, I updated to 5.0.1 Lollipop on my GT-I9506 yesterday and i saw 2 new things at bootloader, First thing was Knoxwaranty void (0) then i rooted (flashed TWRP) it became Knox waranty void (2) has samsung addes some king of counter or something? Like how many times you have tripped E-fuse?
And second ting as Secre download? what is that.??