There's an exploit in 3.4.5, I don't know what it is. All I know is that my MySQL database has been leaked and my website has been defaced twice now. I don't know where to post this or how to get it across but yeah. Spent $200 on the license and I can't even use it.

You better submit a ticket. No one can do nothing here for you.

If really there's an exploit, they'll release a patch.

It could be a security vulnerability in your server configuration, IPB recently released a patch about a server configuration error.

It might not actually be IPS's software.

Where can I submit a ticket?

You can easily submit a ticket by going here,

https://www.invisionpower.com/clients/index.php?app=nexus&module=support&section=new

There are no known security vulnerabilities presently. Even the most recent one we patched (which was in a third party product we ship with IP.Board) would not easily allow your database to be leaked unless your server configuration allowed external connections to MySQL (a pretty bad idea if you are not extremely conscious of how security works in that context).

We would encourage you to submit a ticket for assistance so we can help investigate and track down the source of the problem.