&gt;  Startup idea: Whitehat Social Engineering (as a service). You authorise a whitehat team to attempt to social engineer all your discoverable internet presence&#x2F;accounts to see what personal information their systems and&#x2F;or customer service will disclose based on existing publicly available data. (I suspect legally that&#x27;d at least be on the white-ish side of grey rather than blackhat...)<p>You&#x27;d need to take care to avoid getting people locked out of their accounts, but otherwise that sounds like a useful service for the small fraction of people who have a high enough profile that others may actively target them.  I don&#x27;t know if that represents a large enough target market for a sustainable business, but it might.<p>&gt; I wonder how long it&#x27;ll be before (or how long ago it became) sensible to register a shell company as the holder of any public record you&#x27;re legally required to make public? It&#x27;s probably much easier to roll your shell companies &quot;registered address&quot; if you discover it&#x27;s been compromised than it is to move house every time Amazon&#x27;s customer service goes &quot;above and beyond&quot; on your behalf to your attackers...<p>Depends on how easily you can register a shell company that doesn&#x27;t itself have easily traceable public records of ownership.  Little point in the indirection if you can then look up the shell company and its official owners and legal contacts.