Wow, if you have access to a running ubuntu laptop, and you put it in suspend mode, and then remove the hardware, you can just log on to the running system afterwards (no password needed) and look at every still open/cached application, extract passwords kept in RAM (full disk encryption, anybody?), etc.
It's been wontfixed for a couple of months: https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1777415
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