pinning ssh stable on a testing system

[Tarapia Tapioco <comesefosse@ntani.firenze.linux.it>]

I run Debian testing systems and we need remote logins.

So I want to pin ssh/stable because I think it's more secure than
ssh/testing or ssh/unstable.

Is that belief correct?

Is the following way correct to do it in /etc/apt/preferences?


Explanation: manually pinned
Package: ssh
Pin: release a=stable,c=main,o=Debian,l=Debian
Pin-Priority: 1001


Thanks.