DNS records and other information for the blocked domain name indicate that the seizure of the Shadow Library Z-Library domain name was the result of cooperation between the U.S. Postal Inspection Service and the U.S. Department of Justice, presumably as a result of criminal proceedings arising from the site's growing piracy problem.

Before law enforcement crackdowns are taken, cybercrime investigators conduct adult, technically demanding investigations into these cases in secret, and through international police cooperation and data sharing, are often able to identify and eventually arrest suspects operating anonymously on the dark web.

According to the U.S. Attorney's Office for the Northern District of Ohio, Smith "purchased more than 600 stolen debit and credit card accounts from the dark web, affecting victims in 25 states."

Defendant Edison Hernandez is alleged to have been a highly rated supplier of illegal drugs on dark web marketplaces such as Silk Road, AlphaBay, Dream Market, and WallStreet Market. From January 2013 through April 2019, Hernandez advertised and sold heroin and cocaine to U.S. customers through these dark web marketplaces.

Pham is a methamphetamine supplier to dark web marketplaces, using the alias "addy4cheap" on both the Empire Market and Cryptonia dark web marketplaces.

The RansomHouse ransom group released a sample of the data it had and claimed that it was easy to access because AMD used generic passwords. These include the word "password", as well as "123456" and "AMD!23".

Interpol Secretary General Jurgen Stocker said he fears state-developed cyber weapons will be on the dark web "within a few years. The topic of cyberwarfare has long been a concern for governments around the world, but it has gained new attention in the Russia-Ukraine war. According to the World Economic Forum's Global Cybersecurity Outlook report, the number of global cyber attacks more than doubled in 2021.

Instructions in English and Russian on how to access the dark web site have appeared on the CIA's social media channels, and the CIA's dark web address is: http://ciadotgov4sjwlzihbbgxnqg3xiyrg7so2r2o3lt5wz5ypk4sxyjstad.onion

Investigators linked them to a website on the dark web that mailed customers fake Adderall containing methamphetamine.Undercover DEA agents ordered Adderall pills against the account. The account offered various quantities of 30 mg prescription pills for the treatment of ADHD.

The lawmakers argued that these illegal marketplaces on the dark web are hubs and havens for some of society's most dangerous criminals, and that as these criminals become more technologically advanced, there is a need to ensure that law enforcement efforts have more tools to combat them.