Techniques
Recognize interference with evidence without mistaking ordinary system behavior for intent.
Start with the interference claim
Anti-forensics is a useful description of interference with the availability or interpretation of digital evidence. It is not a shortcut from a missing record to a person's intent. Define the alleged action, the records that should exist, and the ordinary processes that might produce the same result.
Time and metadata
Compare recorded times, clock settings, and independent event sequences. A timestamp mismatch can reflect copying, normalization, or an altered clock.
Build a timeline with uncertaintyMissing logs and deleted data
Test retention, rollover, collection coverage, and storage behavior before describing deliberate destruction. Failed recovery alone does not identify a cause.
Interpret a Security log clear recordSynthetic or misleading evidence
Preserve the original object and its handling history. Metadata, signed assertions, and detector output answer different questions.
Read the evidence reliability guideWhat would support the claim?
A useful explanation connects an observed change to a mechanism, a time range, and corroborating records. Distinguish the account or process recorded by a system from a person attributed by an investigator. Deliberate manipulation remains an interpretation that needs additional support.
- Timestamp Manipulation
Field manual coverage of altered times and competing explanations.
- Log Gaps
Retention and collection gaps can imitate suspicious absence.
- Intent Analysis Limits
Separate what happened from why a person may have acted.
- MITRE ATT&CK: Clear Windows Event Logs
A defensive behavior reference; its examples do not prove an incident on your system.
Detailed references in this section
- Cross-platform storage
Explain failed recovery without claiming deliberate destructionSeparate searched bytes, filesystem allocation, storage behavior, and recovery-method limits.
- Cross-platform
Review metadata inconsistencies across a file’s transformationsCompare filesystem, embedded, service, and collection metadata without assuming every difference is tampering.