Just because you have a login password on your computer, don’t think your private data is secure. It would not take much to access the data without your consent or password. The best way to ensure your private data is secure is to encrypt your files. This comes with it’s own risks, especially if you forget your password and lock yourself out of your files. So you need to make sure you have backups at all times. Also don’t be fooled into thinking that if your files are encrypted, you are safe against ransomware type virus attacks. If infected by ransomware, it will just encrypt on top of your encrypted files. See other post on latest ransomware.
Windows Login Password: Is It Secure? Dataquest - Data Recovery. Done Right
from Dataquest http://bit.ly/2IdhRBs