Securing Debian Manual: 4.2 Execute a security update

[Stayvoid <stayvoid@gmail.com>]

Hello.

"To manually update the system, put the following line in your
sources.list and you will get security updates automatically, whenever
you update your system. Replace [CODENAME] with the release codename,
e.g. squeeze.
       deb http://security.debian.org/ [CODENAME]/updates main contrib non-free"
Is this a good idea? I've thought that "automatically" is not a best choice.

http://www.debian.org/doc/manuals/securing-debian-howto/ch4.en.html

Cheers