80 lines
2.5 KiB
Python
80 lines
2.5 KiB
Python
"""DefensiveTechnique and DefensiveTechniqueMapping models.
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Stores MITRE D3FEND defensive techniques and their mappings to
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ATT&CK techniques, enabling recommended countermeasure lookups.
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"""
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import uuid
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from datetime import datetime
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from sqlalchemy import (
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Column, String, Text, DateTime,
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ForeignKey, Index, UniqueConstraint,
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)
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from sqlalchemy.dialects.postgresql import UUID
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from sqlalchemy.orm import relationship
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from app.database import Base
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class DefensiveTechnique(Base):
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"""
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MITRE D3FEND defensive technique.
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Represents a countermeasure from the D3FEND framework that can be
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mapped to one or more ATT&CK techniques via DefensiveTechniqueMapping.
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"""
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__tablename__ = "defensive_techniques"
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id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
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d3fend_id = Column(String, unique=True, nullable=False) # e.g. "D3-AL"
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name = Column(String, nullable=False)
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description = Column(Text, nullable=True)
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tactic = Column(String, nullable=True) # Detect, Isolate, Deceive, Evict, etc.
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d3fend_url = Column(String, nullable=True)
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created_at = Column(DateTime, default=datetime.utcnow)
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# Relationships
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attack_mappings = relationship(
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"DefensiveTechniqueMapping",
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back_populates="defensive_technique",
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cascade="all, delete-orphan",
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)
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__table_args__ = (
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Index('ix_defensive_techniques_tactic', 'tactic'),
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)
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class DefensiveTechniqueMapping(Base):
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"""
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Association between a MITRE ATT&CK technique and a D3FEND
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defensive technique.
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"""
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__tablename__ = "defensive_technique_mappings"
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id = Column(UUID(as_uuid=True), primary_key=True, default=uuid.uuid4)
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attack_technique_id = Column(
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UUID(as_uuid=True),
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ForeignKey("techniques.id", ondelete="CASCADE"),
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nullable=False,
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)
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defensive_technique_id = Column(
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UUID(as_uuid=True),
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ForeignKey("defensive_techniques.id", ondelete="CASCADE"),
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nullable=False,
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)
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# Relationships
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attack_technique = relationship("Technique")
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defensive_technique = relationship("DefensiveTechnique", back_populates="attack_mappings")
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__table_args__ = (
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Index('ix_dtm_attack_technique', 'attack_technique_id'),
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Index('ix_dtm_defensive_technique', 'defensive_technique_id'),
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UniqueConstraint(
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'attack_technique_id', 'defensive_technique_id',
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name='uq_attack_defensive_technique',
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),
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)
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