The Distributed Network Protocol 3 (DNP3) is widely used in SCADA (Supervisory Control and Data Acquisition) systems for communication between control systems and remote devices. One significant security concern with DNP3 is the lack of built-in authentication mechanisms in the original protocol specification. This absence means that it is challenging to ensure that messages are genuinely from authorized sources, making the protocol vulnerable to various types of attacks, such as man-in-the-middle attacks and unauthorized command injections.
One of the known security concerns with the Distributed Network Protocol version 3 (DNP3), which is used in SCADA systems, is the lack of built-in security features, including authentication. This means that by default, it does not verify the identity of the entities communicating, making it susceptible to unauthorized access and commands.
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