Hello My MBP updated while it was on last night. Here is the info about this update: https://support.apple.com/en-us/HT207130. I found several strange things after this happened: 1. I got the Welcome to your Mac screen asking me to accept or decline that feedback to application developers will be sent. This I have answered already since I first installed El Capitan on this machine. 2. All the update history under the update area in the App Store has been wiped out. Only the last update shows there now. This has never happened before. 3. The encryption password for my external USB Time Machine disk has been erased from Keychain and I had to input it again. This has never happened before. Have some of you detected things like this after the latest security update was installed?