Definition
Computer security protects systems and data from unauthorized access or modification:
\text{Protected: } \chi_{authorized} \quad \text{Blocked: } \chi_{unauthorized}
In SCU terms: Security ensures computational χ-mode configurations remain in authorized states—preventing unwanted information transformations.
The CIA Triad
| Principle | Protection | χ-Mode Meaning |
|---|---|---|
| Confidentiality | Information access | χ-mode states visible only to authorized observers |
| Integrity | Information accuracy | χ-mode configurations unchanged without authorization |
| Availability | System access | χ-mode processing remains accessible |
Information as Physical State
Since information is χ-mode configuration (physical):
I = \text{χ-mode arrangement}
Security is protecting physical states—the bits in memory, the signals on networks, the magnetic domains on disks.
Threat Model
Attackers attempt unauthorized χ-mode transitions:
| Threat | χ-Mode Attack |
|---|---|
| Malware | Inject malicious χ-configurations |
| Intrusion | Unauthorized χ-mode access |
| DoS | Disrupt χ-mode processing |
| Data theft | Copy χ-mode information |
Defense Strategies
| Strategy | How It Works |
|---|---|
| Defense in depth | Multiple χ-mode barriers |
| Least privilege | Minimal χ-mode access rights |
| Isolation | Separate χ-mode domains |
| Detection | Monitor χ-mode anomalies |
Physical Security Foundation
Digital security ultimately rests on physical security:
- Memory χ-modes protected by access controls
- Network χ-modes encrypted in transit
- Storage χ-modes secured on devices
The Key Insight
Security protects χ-mode information states.
Computer security is physical state protection:
- Information exists as χ-mode configurations
- Attacks are unauthorized χ-mode changes
- Defenses maintain intended χ-mode states
- Breaches are unwanted χ-mode transitions
Every security measure—encryption, access control, monitoring—protects the physical χ-mode states that encode information.