Ralph Langner is the founder and Chief Executive Officer of Langner, Inc., a position he has held since 2018 in the United States. He also serves as the founder and Chief Executive Officer of Langner Communications GmbH, which he established in 1988 in Germany.
Langner is known for his work in cybersecurity, particularly for cracking Stuxnet's payload. Richard Danzig, former Secretary of the US Navy, has referred to him as "the global authority on cyber-physical attacks.