Comprehensive and Detailed Explanation From Exact Extract:
PLC logic project files contain the source code and configuration used to program a programmable logic controller (PLC). These files often reveal:
Control logic and operational sequences
Network addressing information
Interconnections between devices and systems
Thus, an attacker with access to these files can infer details about the network architecture (B), including how devices communicate, which protocols are used, and possibly the network topology.
Personnel data (A), firewall rulesets (C), and vendor release schedules (D) are not typically stored within PLC logic projects.
The GICSP framework stresses protecting such engineering artifacts because their compromise can provide an attacker with valuable insight to facilitate targeted attacks on ICS.
[Reference:, , GICSP Official Study Guide, Domain: ICS Security Architecture & Design, , GICSP Training Modules on PLC Security and Engineering Artifacts Protection, , NIST SP 800-82 Rev 2, Section 5.6 (System and Communication Protection)]
