DAM! Thats a pretty serious breach. I hope you notified CASA.
But this may not be on CASA's end. what may have happened is a phishing attack. You put your details into a site that you thought was legit, but really it stole your password. Then accessed your account to get your personal details. Or maybe they even compromised your email account and went through things.
Might even be some kinda of tojan/virus on your PC. Make sure your virus free, change ALL your online passwords ASAP!
Or maybe someone at CASA has been downloading torrents & visiting adult sites and just compromised everybody
