Field Circuit - Field Circuit

A close-up view of a network switch with multiple white Ethernet cables connected to its ports in a server rack.

Field Circuit

IXON VPN Client before 1.4.4: local privilege escalation to root and SYSTEM, and why 'local only' is cold comfort

The NVD-tracked flaws in IXON VPN Client before 1.4.4 can take a low-privileged user to root or SYSTEM. Field Circuit reads them as a warning that the remote-access PC, not the tunnel, is the real OT boundary.

Rows of IBM-built Summit supercomputer cabinets in the machine room at Oak Ridge National Laboratory.

Field Circuit

US Agencies Call Model Distillation a Security Threat. The Mechanism Is Ordinary API Traffic.

CISA, the NSA and the FBI have treated a pattern of AI inference traffic as a national-security problem, even though at the API/query layer it is indistinguishable from ordinary use. The consequence is not a patch. It is monitoring, rate-limiting and contract design.

An Allen-Bradley ControlLogix PLC rack mounted inside an industrial electrical control cabinet with various I/O modules.

Field Circuit

CISA Advisory on 1756-ENBT Modules Reveals ICS's Enduring Legacy Risk

A recent CISA advisory about vulnerabilities in the Rockwell Automation 1756-ENBT communication module, some dating back to 2009, underscores the profound challenge of managing legacy risks in industrial control systems and demands a shift in operational security strategy.