Visser Precision is a component manufacturer and works with many Companies in various industries, including aerospace, the automotive industry etc.
The hackers published the stolen data because the victim refused to pay the ransom.
The huge amount of data exposed is sensitive documents related military equipment designed by Lockheed-Martin, pricing and payment forms, supplier information, data analysis reports, etc. Some documents contain details about a SpaceX program.
The DoppelPaymer gang uploaded part of the stolen documents of the aerospace companies to one website, which is accessible to the public.
A Lockheed Martin spokesman said the company was "aware of the situation with Visser Precision and is following the usual cybercrime response process".
"Lockheed Martin has made and continues to make significant investments in cybersecurity and uses best practices security for protection sensitive information. This includes providing guidance to our suppliers to help them strengthen it securityς in cyberspace ", the company states.
So far, neither Visser Precision nor any of the other aerospace organizations affected have commented.
The DoppelPayer gang appeared in July 2019. Security experts believe some gang members TA505 they left the group and used him source code of Dridex and BitPaymer to create DoppelPayer ransomware.
These hackers have published them data and other companies that refused to pay the ransom.