Although almost every company issues a 'we care about your privacy' statement, but there is often very little 'money where your mouth is' resources to back that up.

This is why I am almost always very reluctant to give out any information that is not absolutely necessary to provide me the service that I need. If they don't know it, they can't leak it.

Every company wants you to fill out their standard form that tries to get you to volunteer way more info than they really need.