by Ace July 29th 2016, 4:06 am
Hi,
So, like others said above, it's highly likely that someone told him, leaked or granted him access to these sections. If he isn't an administrator and doesn't have permission to see the topics, he won't, since PHP technology is based server side. That way, even if he tried to modify things client side it would be unlikely for him to discover a glitch that would allow such access. If you do trust people that have access to these sections and they say they are not leaking information, I'd say it's much more probable that they have weak passwords and, there for, allowed someone to access their own personal accounts. There are other concerns, such as the usage of the same password throughout the internet, the same password for both e-mail and forum's account and so on. By any chance, have you received a PM from him or other suspicious account with an external link? It isn't necessarily a virus that would grant him access.
Besides, what's the extension of these leaks? He knows precisely the content of a post, he knows when someone posted in the private section, what time, what's the topic URL...? There are easy ways of finding these without having trouble (except for the content of the posts and the topic).
However, again, most likely it has been leaked by someone with access or had their account compromised -- thus granting access.