Ok, several things you should know.
- This forum is currently configured to allow guest access to three boards: Our Community, Resources, and Forum Information. The Community board contains many threads discussing members' personal situations, and this info is available to all visitors/bots/spiders/etc. All other boards are visible only to logged in members.
- The only data that is hashed in the forum database is your password. Email address and all other info in your member profile are saved as clear text. It is possible for any database to be hacked, this depends pretty much entirely on server security, which is usually host's responsibility unless you're running your own server, in which case you'd need to know exactly what you're doing.
- All ad services are designed to collect personal information, and they will take whatever they can get, however they can get it, regardless of the few unenforceable laws that may be in place. Once they have the data, there is no way to have them delete it, even if you know they have it, which you don't. It's analyzed, aggregated, bought, sold, and traded, and very shortly ends up in many hands, none of which you're aware of.
- If you're using an Android device or Chrome browser, there's no point in being concerned about your privacy as you've already given it all away. Android and Chrome have access to everything on your mobile or pc, and send data to Google at regular intervals whenever the device is operating.
A great deal of effort goes into keeping SMF forumware secure, there have been 17 updates to the current 2.0 branch, most, if not all, of which contain security patches to address new vulnerabilities and exploits that are an ongoing problem on the net. I've cleaned up several forums that were hacked, none recently, and in those cases there were no indications that the database had been breached. But you must consider that any info you put into your pc, mobile, and (especially) phone is at risk. You can do some basic things to reasonably protect your online privacy, but no security on the internet is bulletproof, and this forum is no exception.