On Jan. 3, cybercriminals on a darknet black market run by Chinese state hackers published an advertisement for information and vulnerabilities in a long list of major airlines that included Delta Airlines, United Airlines, Japan Airlines, FedEx, and others.
Who were Selling Vulnerabilities?The advertisement was under the “Air Attacks Infrastructure” category under the premium section of the online black market run by hackers who call themselves “Babylon APT.”
The Babylon APT marketplace is run by Chinese military hackers who use it to resell information and access to critical networks after finishing contract cyberattacks under the Chinese regime.
"Chinese Military hackers selling Vulnerabilities"The darknet is a large section of the Internet only accessible using specialized software, and while it has many benign uses it is also home to several black markets.
Alexander mentioned that the current outage of the flights may not be relate with the sale of vulnerabilities, but hackers certainly have some level of access into there systems.