/etc/logcheck/ignore.d.paranoid/ssh is in logcheck-database 1.3.17.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | ^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sshd\[[0-9]+\]: \(pam_[[:alnum:]]+\) session opened for user [^[:space:]]+ by ([[:alnum:]-]+)?\(uid=[0-9]+\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sshd\[[0-9]+\]: \(pam_[[:alnum:]]+\) session closed for user [^[:space:]]+$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sshd\[[0-9]+\]: pam_[[:alnum:]]+\(sshd?:session\): session opened for user [^[:space:]]+ by ([[:alnum:]-]+)?\(uid=[0-9]+\)$
^\w{3} [ :0-9]{11} [._[:alnum:]-]+ sshd\[[0-9]+\]: pam_[[:alnum:]]+\(sshd?:session\): session closed for user [^[:space:]]+$
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