Physically break into box? (Memory & disk)

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http://unix.stackexchange.com – I have a VPS. I might be able to encrypt my partition but I havent tried. My VPS company I believe can reset my root password although the only ssh key i see is my own. With all my data i have it encrypted with encfs. Just in case a hacker gets some kind of access. encfs can only mount the drive if my password is correct (ssh keys doesnt mount it, resetting root password will not mount as the new password is an incorrect passphrase) My question is can my VPS host break into my box? Physically the data is encrypted. I believe root can be changed without resetting the box? If so then they can h (HowTos)