For the past week I have been dealing with a major issue regarding Nook's password security.
I changed my password on Barnes and Noble's website due to a possible email hack. After changing the password, I expected to enter it in to my nook, the nook app and the B&N app. That was not the case. I was able to download and purchase books through my Simple Touch, without being prompted for my new password. I was not asked to add my new password to the apps and they downloaded books as well. I rebooted the device and apps and they still did not require the new, updated password. They recognized the email address and that I had used the app before and functioned normally. This means that any device that may know my email address can upload or purchase books without requiring a password.
I have called several times this week only get the run around. I changed passwords (again) on the phone and they all told me that they can see books downloading, regardless of the new passwords. I was told there is nothing they can do and that someone should be working on it.
I ended up talking to three different managers throughout the week and all of them said I would get a call back in 24-48 hours... Each time, after three days of waiting, I ended up having to call back. In the meantime, my account is open to people that may know my email.
If you use the apps or have a Nook, I suggest you make sure this isn't happening to you too.