06-30-2013
Anything open to access is part of the attack surface and can be attacked though whether this allows a successful hack is another matter.
The only way to secure a server is consider attacks and what you can do to prevent them.
In your case, you may have strong passwords, but are you going to know if someone tries your root account 506938 times with a brute force attack until they happen to find your password? Does your version of openssh have any security vulnerabilities that are remotely vulnerable? If you give someone else access, how do you know that they are changing things appropriately and not introducing vulnerabilities?
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LEARN ABOUT DEBIAN
sbuild-apt
SBUILD-APT(1) Debian sbuild SBUILD-APT(1)
NAME
sbuild-apt - run apt-get or apt-cache in an sbuild chroot
SYNOPSIS
sbuild-apt [-h|--help | -V|--version] CHROOT (apt-get|apt-cache) [ARG1 [ARG2 [ARGn...]]]
DESCRIPTION
sbuild-apt runs apt-get(1) or apt-cache(1) inside the specified chroot, along with any additional arguments.
OPTIONS
Actions
-h, --help
Display this manual.
-V, --version
Print version information.
Chroot selection
CHROOT The chroot to run the command in. Note that 'o', 's', 't', 'u' and 'e' may be used as abbreviations for 'oldstable', 'stable',
'testing', 'unstable' and 'experimental', respectively.
APT options
apt-get
Run apt-get.
apt-cache
Run apt-cache.
ARG Additional arguments to pass to apt-get or apt-cache.
EXAMPLES
To update the APT package lists in the unstable chroot:
% sbuild-apt unstable apt-get update
Note that sbuild-update(1) is a more convenient method for doing the above.
AUTHORS
Roger Leigh.
COPYRIGHT
Copyright (C) 2006-2008 Roger Leigh <rleigh@debian.org>.
SEE ALSO
apt-cache(1), apt-get(1), sbuild(1), sbuild-update(1), sbuild-upgrade(1).
Version 0.63.2 18 Aug 2012 SBUILD-APT(1)