M.C. Dean Inc Breach

Date: December, 2021

M.C. Dean is a massive organization headed in Tysons, Virginia, that works with engineering companies, manufacturing, and many other industries to provide them with cyber-physical systems. The company works to integrate existing manufacturing tools and other industrial products with the internet, with computer algorithms and more sophisticated digital controls. The company has worked on government projects and works with many major businesses from around the world, earning more than $1B in revenue annually and employing more than 5,000 individuals.

What Was the Breach?

  • Financial Account Info
  • Social Security Number
  • Driver's License Number
  • Confidential Health Information

How Did the Breach Occur?

In the M.C. Dean Inc breach, the hackers gained access to the file network of the company without alerting any of the network professionals. The breach gave the individuals access to secure files throughout the network and potentially compromised information from some of M.C. Dean's customers.

When Did This Breach Occur?

This M.C. Dean Inc data breach began on December 24, 2021, and continued until June 2, 2022. Over 5 months, the hackers had access to the files throughout the M.C. Dean network.

Who Does the Breach Impact?

This data breach impacts customers of M.C. Dean Inc, that may be sharing delicate information with the service provider. Any companies that receive a notice from the organization should take care to secure their own files and monitor their accounts closely.

How Many Files Does the Breach Affect?

The experts that researched the M.C. Dean Inc breach aren't sure about how many files were accessed during the attack. With over five months to explore the network, it's safe to assume that thousands of files were accessed and that many companies could have had their information compromised in the attack. It's concerning that the data breach went undetected for so long by a company that specializes in digital technology, and hopefully, M.C. Dean Inc has taken dramatic steps to improve its network security since the attack.

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