“The Deep Web is a heap of illegal activity, pervade with child pornography, drug deals, Cyber crime and human trafficking. But because the dark web is ‘buried’ so deeply that it is out of the reach of mainstream search engines and law enforcement agencies, however, that’s until now.
Memex Search Engine attempts to secure the Internet from hackers, human traffickers and other criminals. The deep web search engine was designed to overcome the above challenges by extending ‘the reach of current search capabilities and quickly and thoroughly organize subsets of information based on individual interests.'”

Source: US Government builds “Memex Deep Web Search Engine” to Track Criminals – Hacker News