Our products > Cybersecurity > Bus Defender

Bus Defender™

Protecting fielded systems with 1553 data buses with on-platform, real-time defense and off-platform defense during maintenance and test

Bus Defender is a proven solution for cyber defense on the MIL-STD-1553 data bus. Bus Defender protects against diverse run-time attacks, including zero-day attacks and known vulnerabilities, as well as supply chain attacks, without requiring any modifications to 1553 platforms—including line-replaceable units and weapons replaceable assemblies—or to systems software or configurations. Bus Defender can be flexibly deployed in a variety of configurations to meet platform-specific and off-platform requirements.  

Fielded warfighting systems connected to MIL-STD-1553 buses are vulnerable to destructive cyberattacks from multiple entry points on fighter aircraft, vehicles and ships. 1553 Bus Defender was developed to address this demonstrable lack of security on the 1553 bus and the in-line systems connected to it. ​
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How it works

Bus Defender delivers total cyber resiliency for fielded MIL-STD-1553 systems, providing both on-platform, real-time active cyber defense for operational continuity and off-platform defense during maintenance, test and software loading. Unlike software-based approaches, Bus Defender does not require any modifications to 1553 platforms, including line-replaceable units (LRUs) and weapons replaceable assemblies (WRAs), or to systems software or configurations.​

​Bus Defender for on-board systems

​Bus Defender performs real-time, low-delay network protection to defend weapons platforms from attacks launched or propagated over the MIL-STD1553 data bus. It is based on patented, sophisticated security processing algorithms and can also be designed into next-generation subsystems to provide built-in security.

Benefits and features:
  • Detects and mitigates both zero-day and known attacks
  • Hardware-in-line module requires no modification to line replaceable units (LRUs) / weapons replaceable assemblies (WRA) or their configurations or software
  • Operates within 1553 real-time timing constraints
  • Extremely difficult for an attacker to disable because it cannot be turned off like a software solution

​Maintenance Defender for maintenance, test and operational flight program (OFP) loading applications

​Maintenance Defender is an off-board device based on the Bus Defender technology. It can be immediately deployed to protect all data uploads and maintenance and test access to operational platforms via the 1553 bus-based maintenance port on an aircraft or vehicle. Maintenance Defender is used to defend against malware propagation from compromised LRUs / WRAs via test equipment and to protect 1553 systems from attack or inadvertent misuse during maintenance and test.

Benefits and features:
  • Detects and blocks malware from being introduced into an aircraft or vehicle during maintenance and test operations
  • Eliminates propagation of malware from compromised LRU / WRA via the test system
  • Prevents loading of malicious or compromised OFPs via the 1553 data bus
  • Requires no modification to test equipment or platform
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Advantages

  • Requires no changes to existing warfighting system software or configurations
  • Extremely difficult for an attacker to disable security—unlike software-only solutions
  • Supports multi-level security objectives to protect against untrusted LRUs
  • Stops zero-day attacks as well as known vulnerabilities
  • Prevents the loading of malicious operational programs onto the LRUs / WRAs
  • Meets stringent delay constraints for the MIL-STD-1553 protocol
  • Can be configured to meet platform-specific architecture requirements
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Resources

Research and products of interest

Research

  • Cybersecurity research: innovations to protect mission-critical networks, services, systems and infrastructure 

Products

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