Hello Team,
Quite easy fix --> configuration change to do not expose SSH details in Debian style.
https://manpages.debian.org/buster/openssh-server/sshd_config.5.en.html#DebianBanner
DebianBanner
Specifies whether the distribution-specified extra version suffix is included during initial protocol handshake. The default is yes.
Once enabled, default approach:
SSH-2.0-OpenSSH_7.9p1 Debian-10+deb10u2
Once disabled (not tested yet):
SSH-2.0-OpenSSH_7.9p1
It won't make more secure, but it's better to hide something which is not needed to be exposed.
Thanks,