@gb, when I (as @kas_ssblist) visit http://ssblist.com/#private, this is what I see:
Since the very first post from @kas_ssblist happened less than 24 hours ago, and since @kas_ssblist has never interacted with the accounts mentioned above, he shouldn't be able to read those messages, should he?
(@GM
is pointing at @8WbRNFD…
and @G
is pointing at @PveBwM2…
.)