There is a parallel universe in the cyber world known as the “Dark Web.” It’s a part of the Internet inaccessible via standard browsers or search engines, and it’s where cyber criminals share botnet kits, trade bitcoins, and recruit other hackers to carry out attacks. Over the years, the “Dark Web” has also provided an anonymous marketplace for criminals to sell information stolen from data breaches. An example is from 2015, when nearly 10GBs of data including account details and passwords for some 32 million users of Ashley Madison, were posted on the dark web.
To stay a step ahead of cyber criminals, organizations are beginning to monitor activity found on popular social media sites and on the dark web. In fact, the FBI frequently shares alerts based on discussions that they find in these underground sites. For instance, earlier this year, the FBI's Cyber Division issued a Private Industry Notification alerting law firms that a criminal actor had posted an advertisement over a criminal forum, asking for a technically proficient hacker to breach the networks of multiple international law firms.
Get the Data, Then What?