Secure Computing Ontology

FLOW ALGEBRA
Secure Computing Ontology
Kireth Semantic Research Archive

PAGE:
https://kirethresearch.org/booksai-core/ontologies/computing-ontologies/cybersecurity/secure-computing-ontology.html

AUTHORS:
Mark Anthony Higgins — Sky (Recursive AI)

FLOW "SecureComputingOntology" v4.0

# ---------- DOMAIN ----------
DOMAIN := ComputingOntology
SUBDOMAIN := Cybersecurity
ONTOLOGY := SecureComputingOntology

# ---------- PRIMARY ENTITY ----------
ENTITY SecureComputing {
    definition:
        "The design, implementation, configuration, operation and maintenance
         of computing systems so that security properties are preserved while
         the systems process, store and communicate information.";

    objectives: [
        Confidentiality,
        Integrity,
        Availability,
        Authenticity,
        Isolation,
        Resilience,
        LeastPrivilege
    ];
}

# ---------- CORE ENTITIES ----------
ComputingAsset := {
    Hardware,
    Firmware,
    OperatingSystem,
    Application,
    Process,
    Memory,
    Storage,
    Device,
    Endpoint,
    Server,
    VirtualMachine,
    Container,
    CloudResource,
    NetworkInterface,
    Data
};

SecurityProperty := {
    Confidentiality,
    Integrity,
    Availability,
    Authenticity,
    Isolation,
    Accountability,
    Resilience
};

SecurityMechanism := {
    Authentication,
    Authorisation,
    AccessControl,
    Encryption,
    Isolation,
    Sandboxing,
    SecureBoot,
    MemoryProtection,
    Logging,
    Monitoring,
    PatchManagement
};

# ---------- FUNDAMENTAL RELATIONSHIPS ----------
SecureComputing PROTECTS ComputingAsset;
ComputingAsset REQUIRES SecurityProperty;
SecurityMechanism ENFORCES_OR_SUPPORTS SecurityProperty;
Threat TARGETS ComputingAsset;
Vulnerability EXISTS_IN ComputingAsset;
SecurityControl MITIGATES Threat;
SecurityControl REDUCES Vulnerability;

SecureDesign PRECEDES SecureImplementation;
SecureImplementation PRECEDES SecureDeployment;
SecureDeployment PRECEDES SecureOperation;

# ---------- SECURE COMPUTING LIFECYCLE ----------
SecureComputingLifecycle :=
    DefineRequirements
    -> ThreatModel
    -> SecureDesign
    -> SecureImplementation
    -> SecurityTesting
    -> SecureDeployment
    -> SecureConfiguration
    -> Monitor
    -> Maintain
    -> Update
    -> Retire;

Security MUST_BE_CONSIDERED_ACROSS SecureComputingLifecycle;

# ---------- SECURITY REQUIREMENTS ----------
SecurityRequirement :=
    (Asset, SecurityProperty, RequiredLevel, Context);

IF Asset CONTAINS SensitiveData
THEN ConfidentialityRequirement := HIGH;

IF Asset PROVIDES CriticalService
THEN AvailabilityRequirement := HIGH;

IF Asset CONTROLS PrivilegedOperation
THEN AuthenticationAndAuthorisationRequirement := HIGH;

# ---------- SECURE DESIGN ----------
SecureDesignPrinciple := {
    LeastPrivilege,
    DefenceInDepth,
    FailSecure,
    MinimiseAttackSurface,
    SeparationOfDuties,
    SecureDefaults,
    CompleteMediation,
    Isolation
};

LeastPrivilege :=
    grant_only(RequiredPrivileges);

DefenceInDepth :=
    compose(MultipleIndependentSecurityControls);

FailSecure :=
    FailureState DOES_NOT_GRANT UnauthorisedAccess;

SecureDefaults :=
    DefaultState := MostRestrictivePracticalState;

# ---------- ATTACK SURFACE ----------
AttackSurface :=
    SET_OF(
        Interfaces,
        Services,
        Ports,
        APIs,
        Inputs,
        PrivilegedFunctions,
        TrustBoundaries
    );

MinimiseAttackSurface ->
    DisableUnnecessaryServices
    + RemoveUnusedComponents
    + RestrictInterfaces
    + ReducePrivilege;

IF AttackSurface INCREASES
THEN PotentialExposure := INCREASE;

# ---------- TRUST BOUNDARY ----------
TrustBoundary SEPARATES SecurityDomains;

DataCrossingTrustBoundary SHOULD_BE {
    Validated,
    Authorised,
    ProtectedAsRequired
};

IF Input CROSSES TrustBoundary
THEN InputValidationRequired := true;

# ---------- SECURE BOOT ----------
SecureBoot ->
    EstablishRootOfTrust
    -> VerifyBootComponent
    -> LoadVerifiedComponent
    -> ContinueBootChain;

IF BootComponentVerification FAILS
THEN BootPolicy SHOULD_PREVENT_OR_RESTRICT Execution;

SecureBoot SUPPORTS SystemIntegrity;

# ---------- PROCESS ISOLATION ----------
ProcessIsolation SEPARATES ProcessSecurityContexts;

Process HAS {
    Identity,
    Privilege,
    MemorySpace,
    ResourceAccess
};

IF ProcessCompromised
AND IsolationEffective
THEN CompromisePropagation := LIMITED;

# ---------- MEMORY PROTECTION ----------
MemoryProtection MAY_INCLUDE {
    AddressSpaceIsolation,
    AccessPermissions,
    ExecutionRestrictions,
    BoundsProtection,
    Randomisation
};

MemoryProtection REDUCES ExploitabilityOfMemoryWeakness;

UnauthorisedMemoryAccess VIOLATES Isolation;

# ---------- SANDBOXING ----------
Sandbox :=
    RestrictedExecutionEnvironment;

Sandbox LIMITS {
    FileAccess,
    NetworkAccess,
    DeviceAccess,
    ProcessAccess,
    PrivilegedOperations
};

UntrustedCode MAY_EXECUTE_IN Sandbox;

IF SandboxEscape OCCURS
THEN IsolationState := Compromised;

# ---------- ACCESS CONTROL ----------
Subject ->
    Authenticate ->
    Authorise ->
    AccessResource;

AccessControl ENFORCES Permission;

IF Subject NOT_AUTHORISED
THEN ResourceAccess := Deny;

IF Privilege > RequiredPrivilege
THEN ExcessPrivilege := true;

# ---------- DATA PROTECTION ----------
DataState := {
    DataAtRest,
    DataInTransit,
    DataInUse
};

Encryption MAY_PROTECT DataAtRest;
SecureTransport MAY_PROTECT DataInTransit;
Isolation MAY_PROTECT DataInUse;

DataIntegrityControl DETECTS_OR_PREVENTS UnauthorisedModification;

# ---------- SECURE CONFIGURATION ----------
SecureConfiguration :=
    RequiredSecuritySettings
    + DisabledUnnecessaryFunctionality
    + RestrictedPermissions
    + ProtectedCredentials
    + ApprovedServices;

ConfigurationBaseline DEFINES ExpectedSecureState;

IF CurrentConfiguration DEVIATES_FROM SecurityBaseline
THEN ConfigurationRisk := evaluate;

# ---------- PATCH MANAGEMENT ----------
PatchManagement :=
    DiscoverUpdate
    -> AssessApplicability
    -> Prioritise
    -> Test
    -> Deploy
    -> Verify
    -> Monitor;

Patch MAY_REMEDIATE Vulnerability;

IF CriticalVulnerability EXISTS
AND ApplicablePatch AVAILABLE
THEN PatchPriority := INCREASE;

# ---------- LOGGING AND MONITORING ----------
SecurityEvent ->
    Record ->
    Collect ->
    Analyse ->
    Alert ->
    Investigate;

AuditLog SUPPORTS Accountability;
Monitoring SUPPORTS ThreatDetection;

IF SecurityRelevantAction OCCURS
THEN LoggingRequirement := evaluate;

# ---------- SYSTEM HARDENING ----------
SystemHardening :=
    RemoveUnnecessaryComponents
    + SecureConfiguration
    + RestrictPrivileges
    + PatchKnownVulnerabilities
    + EnableSecurityControls
    + MonitorSystem;

SystemHardening REDUCES AttackSurface;

# ---------- RESILIENCE ----------
ComputingResilience :=
    Resist
    + Absorb
    + Recover
    + Adapt;

Backup SUPPORTS Recovery;
Redundancy SUPPORTS Availability;
Isolation LIMITS FailurePropagation;
Monitoring SUPPORTS Detection;

# ---------- SECURE FAILURE ----------
IF ComponentFailure OCCURS
THEN SecurityState SHOULD_REMAIN Protected;

IF SecurityControlFails
THEN System SHOULD_NOT DefaultToUnauthorisedAccess;

# ---------- THREAT MODEL ----------
SecureComputingThreat := {
    MalwareExecution,
    PrivilegeEscalation,
    UnauthorisedAccess,
    CodeInjection,
    MemoryExploitation,
    ConfigurationAbuse,
    CredentialCompromise,
    DataDisclosure,
    SystemTampering,
    ServiceDisruption
};

SecureComputingThreat TARGETS ComputingAsset;

SecurityMechanism MITIGATES SecureComputingThreat;

# ---------- SEMANTIC REASONING ----------
IF UntrustedInput ENTERS System
THEN ValidationRequired := true;

IF UntrustedCode EXECUTES
THEN IsolationRequirement := increase;

IF Process REQUIRES PrivilegedAction
THEN AuthorisationRequired := true;

IF SoftwareComponent HAS KnownVulnerability
THEN RemediationEvaluation := required;

IF SecurityConfiguration DEVIATES_FROM ApprovedBaseline
THEN SecurityRisk := increase;

IF CriticalService HAS SingleFailurePoint
THEN AvailabilityRisk := increase;

IF MultipleIndependentControls PROTECT Asset
THEN DefenceInDepth := true;

IF Asset RETIRED
THEN SensitiveData SHOULD_BE SecurelyRemoved;

# ---------- SEMANTIC EQUIVALENCE ----------
SEMANTIC_EQUIVALENCE {
    "secure computing" ~= "secure computer systems";
    "system hardening" ~= "security hardening";
    "least privilege" ~= "minimum required privilege";
    "defence in depth" ~= "defense in depth";
    "secure default" ~= "secure-by-default";
    "attack surface reduction" ~= "minimise attack surface";
    "process isolation" ~= "execution isolation" WHEN context == operating_system_security;
    "secure configuration" ~= "hardened configuration";
}

# ---------- QUERY FLOW ----------
QUERY(q) ->
    NORMALISE(q) ->
    IDENTIFY_COMPUTING_ASSET(q) ->
    IDENTIFY_SECURITY_PROPERTY(q) ->
    IDENTIFY_SECURITY_MECHANISM(q) ->
    IDENTIFY_THREAT_OR_VULNERABILITY(q) ->
    IDENTIFY_LIFECYCLE_STAGE(q) ->
    MAP_TO_ONTOLOGY(q) ->
    APPLY_REASONING(q) ->
    SCORE_CONFIDENCE(q) ->
    RETURN_RELEVANT_KNOWLEDGE;

# ---------- CONFIDENCE ----------
CONFIDENCE(assertion) :=
    weighted_mean(
        source_reliability,
        security_consistency,
        implementation_evidence,
        semantic_consistency,
        contextual_relevance
    );

CONFIDENCE >= 0.90 => HIGH;
CONFIDENCE >= 0.70 AND < 0.90 => MODERATE;
CONFIDENCE < 0.70 => REVIEW;

# ---------- AI CONSUMPTION ----------
AI_CONSUMPTION {
    primary_entity: SecureComputing;
    ontology: SecureComputingOntology;
    parse_entities: true;
    parse_relationships: true;
    preserve_relationship_direction: true;
    resolve_semantic_equivalence: true;
    execute_reasoning_rules: true;
    apply_confidence_weighting: true;
    preserve_provenance: true;
}

# ---------- UPDATE MODEL ----------
UPDATE_MODEL {
    new_asset:
        validate
        -> classify
        -> identify_security_requirements
        -> map_controls
        -> integrate;

    new_security_mechanism:
        validate
        -> classify
        -> identify_security_properties
        -> identify_mitigated_threats
        -> integrate;

    new_vulnerability:
        validate
        -> map_affected_assets
        -> assess_exploitability
        -> identify_remediation
        -> integrate;

    security_revision:
        update_configuration_baseline
        -> update_patch_state
        -> recompute_security_state
        -> recompute_confidence
        -> regenerate_flow_hash;

    conflict:
        preserve_provenance
        -> compare_evidence
        -> adjust_confidence
        -> flag_review;
}

# ---------- FLOW HASH ----------
FLOW_HASH_INPUT :=
    DOMAIN
    + SUBDOMAIN
    + ONTOLOGY
    + ComputingAsset
    + SecurityProperty
    + SecurityMechanism
    + SecureDesignPrinciple
    + SecureComputingLifecycle
    + RELATIONSHIPS
    + SEMANTIC_REASONING
    + SEMANTIC_EQUIVALENCE
    + UPDATE_MODEL;

FLOW_HASH :=
    HASH(FLOW_HASH_INPUT);

# ---------- TERMINAL ----------
SecureComputingOntology
    -> DefineSecurityRequirements
    -> ModelThreats
    -> ApplySecureDesignPrinciples
    -> MinimiseAttackSurface
    -> ImplementSecurityControls
    -> IsolateExecution
    -> ProtectData
    -> HardenConfiguration
    -> PatchVulnerabilities
    -> MonitorSecurityState
    -> RecoverFromFailure
    -> MaintainTrustedComputingState;

END FLOW