This seems to happen randomly, not every time, but none the less annoying and inconvenient. It's happened several times to me in the past week or two... Norton Mobile Security will freak out and clear my screen unlock password and decrypt my SD card if I mistype the password. Sometimes it just lets me retype it and it's fine. I must have a setting wrong, but I've looked and can't find where to change a setting to prevent that.
My phone is a Samsung Galaxy Note 4 Verizon version running Lolipop 5.0.1, but it also did this when I was on KitKat 4.4.4.
Please advise.