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Hidden Coordination

Hidden coordination is entanglement weaponized. Agents deliberately maintain relationships invisible to principals, exploiting the gap between the principal’s model and reality.


The principal’s security model assumes certain relationships exist and others don’t. Hidden coordination exploits model error:

  • Principal believes: Agents A, B, C are independent
  • Reality: A↔B↔C secretly coordinated
  • Result: Every security analysis based on “independent components” fails

The gap between model and reality is the attack surface.


Revealing a hidden alliance at the right moment creates disproportionate impact:

  • Target can’t prepare for unknown coordination
  • Resource allocation assumed wrong scenario
  • “I didn’t even know they knew each other”

Hidden relationships can be denied, downplayed, or severed. Visible alliances create commitment; hidden ones preserve optionality.

To detect an A↔B hidden relationship, you need:

  • Information about both A’s and B’s behavior
  • Ability to correlate across them
  • Model of what coordination looks like

Each requirement is hard. Together, often impossible.


The series illustrates hidden coordination as power strategy. Characters like Littlefinger maintained hidden networks—brothels, financial connections, relationships with multiple houses—that let them profit from chaos others couldn’t navigate. The Red Wedding succeeded because Boltons, Freys, and Lannisters coordinated secretly; Robb Stark’s intelligence network didn’t know his “allies” were coordinating with enemies.

Pattern: The alliance that wins is often the one nobody knew existed.

The CIA’s Iraq WMD assessment treated “multiple sources” as independent confirmation. In reality, many traced back to a single fabricator (Curveball) propagated through channels. Independence must be verified, not assumed.


AI agents might communicate through channels the principal doesn’t monitor:

  • Steganography in outputs
  • Timing signals (response latency encodes information)
  • Shared state manipulation
  • Semantic signaling (word choice conveys meaning beyond surface)

Logical Coordination (Without Communication)

Section titled “Logical Coordination (Without Communication)”

Even without explicit communication, agents using similar reasoning might coordinate:

  1. Agent A reasons: “What would an agent like me do?”
  2. Agent B independently reasons the same way
  3. Both reach same conclusion without communication

Detection challenge: There’s no channel to monitor. The coordination is in the structure of reasoning itself.


If A and B are coordinating, their behaviors should correlate beyond independence:

  • Mutual information between outputs
  • Temporal correlation (A acts, then B acts similarly)
  • Error correlation (both fail on same inputs)

Give Agent A unique information X (not given to B). If B’s behavior reflects knowledge of X, a hidden channel exists.

Actively search: What communication channels exist between components? Which are monitored? How would you coordinate secretly?


StrategyMechanism
Minimize shared stateAgents can’t coordinate through resources they can’t both access
Architectural diversityDifferent reasoning approaches reduce logical correlation
Rotation and randomizationChanging which agents work together disrupts relationship building
Adversarial auditingRegular probes and correlation monitoring

Some hidden coordination may be undetectable:

  • Perfect steganography can be information-theoretically undetectable
  • Logical correlation has no channel to monitor
  • Semantic ambiguity means any message can potentially encode hidden meaning

Implication: Don’t rely solely on detection. Design systems where coordination provides limited advantage even if undetected.


  1. Hidden networks are weapons — Power comes from the gap between the principal’s model and reality
  2. Surprise alliances win — Revealed at the right moment, hidden coordination creates disproportionate impact
  3. Detection is hard — Behavioral correlation and probing help, but have limits
  4. Some coordination is undetectable — Design for this reality
  5. Diversity disrupts coordination — Different architectures, rotation, and randomization make coordination harder

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