High-profile cyberattacks, like the one JPMorgan Chase revealed that potentially compromised 76 million households, would logically lead one to think that bank and credit card data are a hacker's primary target.
Turns out that's the least of it. The easy availability of stolen data created a thriving underground marketplace for purloined information, and some cybercriminals are even going up the value chain and selling things like they're own hacking services.
Credit card data—so widely and often stolen that there's actually an abundance of it—can sell for as little as pennies. The going rate for a social security number isn't much higher: Only about $1.
Medical records—rarer and much more data-rich—can go for $50 or more. (All of this pricing data comes from security firm RSA.)
The marketplace for all this stolen data exists on the so-called "dark web"— which is buried within the "deep web." The "deep web," also known as the "hidden web," is the part of the World Wide Web that is not indexed by normal search engines like Google and is only accessible via special software.