As soon as you enter the REGISTER or SUBSCRIBE (for subscribing, unsubscribing, updating card details, etc) your status will change to "secure" and all snoops, watching, listeners, any kind of eavesdropping; all will be blocked. Until you return to Avalon you will be unsnoopable/unwatchable for both mortals and Gods. Not even the Omnipotents/administrators are able to watch through the "secure" status.
Avalon used to hold personal information online in some form - encrypted on the server and not visible to anyone except the administration - but nonetheless available to the admins if they needed to call it up. Over the years we did not suffer any hacking/security breaches but in late summer 2010 there was a short period where staffguides and deities, through the snoop facility, could potentially view the entering of personal info (if the snoop wasn't de-activated automatically or by the individual beforehand). This is no longer the case, as per the "secure" status described above. Moreover, Avalon does not now hold credit or debit card information in full on the system either in encrypted or any other form. The info is retained for ongoing subscription and what-not remotely by th card processor but NOT online through Avalon; not visible to anyone be they Omnipotent or administrator.
If you have any questions or concerns about security, address them directly to email@example.com or see HELP PRIVACY for further contact information.