I came across this article recently about how to "disappear" completely.
It's very scary what type of publicly available information is out there. While we may not have a need to completely disappear, there may be a need to make sure that very little personally identifiable information is in the public domain.
http://www.csoonline.com/article/print/681282
How to disappear completely
Almost everyone has a digital footprint these days. Think you could remove your tracks? Former skip tracer Frank Ahearn helps folks drop off the face of the Earth.
In a world where we share more information online than ever before, it might seem impossible to disappear completely. But Frank Ahearn can help. A professional skip tracer for many years, he tracked down 'missing' persons for clients who were searching for them for legal or financial reasons. His arsenal included use of public records, credit reports, utility bills, criminal background checks, tax information and other revealing documents.
But these days, Ahearn assists people who want to go the other way—those who want to disappear and erase evidence of their existence. In his book How to Disappear: Erase Your Digital Footprint, Leave False Trails, and Vanish without a Trace, Ahearn details some of the tricks he uses when helping clients "get off the grid," as he refers to it, and shares tips for those concerned about information and privacy in this digital-sharing era. And while he refuses to assist people looking to get lost for illegal purposes, he says they often do come looking for help and advice on strategically manipulating information in the wrong direction.
