The Langner Group is a hybrid consulting and software firm specialized in cyber security for critical infrastructure and large-scale manufacturing.

The Langner Group’s principals have each accumulated decades of experience in the field and earned their reputation the hard way:

  • They were the driving forces behind game-changing events and efforts, such as the Aurora project for the US Department of Homeland Security where it was demonstrated that electrical generators can be destroyed by a cyber attack, or the reverse engineering and analysis of the Stuxnet malware.
  • They did not just produce printed paper but results that changed the way cyber security, and national security in a larger sense, is seen. They know what works and what doesn’t by hands-on experience.
  • They have given advice to the White House, the Pentagon, the US Senate, the IAEA, and many others.

“Ralph Langner is the global authority on cyber-physical attacks.”Richard Danzig, former Secretary of the US Navy

“The Langner Group has assembled the world’s top experts in cyber-physical security. At Good Harbor Consulting, we’re happy to team with them for clients where industrial control systems pose a critical cyber risk for the enterprise.”Richard Clarke, former National Coordinator for Security, Infrastructure Protection and Counter-terrorism for the United States, former Special Advisor to the US President on cyber security




Ralph Langner
Co-Founder and Managing Principal

Ralph Langner founded Langner Communications, The Langner Group’s European sister company, in 1988. In his consulting business, Langner accumulated 25 years of hands-on field experience in the cyber security issues of power plants, water treatment facilities, nuclear facilities, food and beverage plants, automotive factories, steel mills, and many more. He received worldwide recognition for his swift and comprehensive analysis of the Stuxnet malware and is considered a leading global expert on cyber defense.

Langner is a frequent keynote speaker at international conferences on cyber security, national security, and critical infrastructure protection. He had been invited to share his insight by NATO, the U.S. Senate Homeland Security and Governmental Affairs Committee (HSGAC), the U.S. Nuclear Regulatory Commission, the International Atomic Energy Agency (IAEA), the International Council on Large Electric Systems (CIGRE), the U.S. Department of Defense’s Advanced Research Projects Agency (DARPA), and the White House. Langner also served as a nonresident fellow with the Center for 21st Century Security and Intelligence in the Foreign Policy program at the Brookings Institution.

The Huffington Post honored Mr. Langner in 2011 as a Game Changer for explaining cyber warfare to the general public.


Perry Pederson
Co-Founder and Managing Principal

Perry Pederson began protecting critical infrastructure against cyber attacks with the US Department of Defense and continued that effort as the Director of the Control Systems Security Program (CSSP) at the US Department of Homeland Security. At DHS, he managed projects such as AGA-12 (cryptographic protection of SCADA communications) and the Aurora project where it was demonstrated that electrical generators can be destroyed by a cyber attack.

Pederson then moved to the US Nuclear Regulatory Commission where he helped to build the regulatory framework for cyber security at US nuclear power reactors and has consulted with the International Atomic Energy Agency on applying security controls to digital instrumentation and control systems globally. He also served as an inaugural member of the Governing board for the Smart Grid Interoperability Panel. Before joining The Langner Group, Pederson held the position of Senior Cyber Threat Analyst for the Nuclear Regulatory Commission.

Mr. Pederson received the 2006 SANS Process Control / SCADA Security leadership award for his outstanding and continuous merits in protecting critical infrastructure against cyber attacks.