Custodia
Evidence Integrity Governance
Detect document fraud before you act. Control access after you share. Complete provenance for evidence-driven decisions.
How digital forensic-led decision-making works
Traditional document review relies on visual inspection and basic metadata checks. Sophisticated manipulation, such as backdating, authorship alteration, and hidden content bypasses these approaches.
Custodia uses AI-powered forensic analysis:
01
Detection algorithms
Examine creation timestamps, modification histories, authorship chains, embedded objects
02
Counter-agent analysis
Proposes legitimate explanations for anomalies, reducing false positives
03
Risk adjudication
Flags high-risk patterns requiring human expert investigation
What we detect
Custodia generates actionable risk alerts, not definitive verdicts. You receive evidence to investigate further, request explanations for, or use to challenge documentation.
Impossible time stamps
Files created before software existed, modified after submission deadlines.
Suspicious gaps in file history
Suspicious absence of expected software and user fingerprints.
Signs of document tampering
Font mismatches, style anomalies indicating manipulation.
False authorship claims
Creation histories incompatible with claimed authorship.
Hidden modifications
Embedded objects, hidden text or deletion histories revealing manipulation.
How evidence governance works
When sensitive data must cross organisational boundaries—shared with external partners, investigators, auditors, and service providers—traditional methods create risk. Email attachments can be altered. Cloud links can be copied. Access cannot be proven.
Custodia preserves chain of custody through:
01
Cryptographic access policies
Persist regardless of document location
02
Identity-based permissions
Control who can access evidence
03
Purpose-based restrictions
Limit use to specified operations
04
Time-bound access
Expires automatically after specified periods
05
Immutable audit trails
Record every access event with cryptographic proof
What audit trails prove
You can share evidence while maintaining cryptographic proof of exactly who accessed what, when, and why. This is documentation that courts and regulators accept as definitive.
Complete access history
Every person who viewed or modified documents.
Timestamps
Exact date and time of each access event.
Identity verification
Cryptographic proof of who accessed evidence.
Modification tracking
What changed, when, and by whom.
Chain of custody
Unbroken documentation from disclosure through case closure.
Evidence integrity across industries
Custodia provides evidence integrity governance wherever organisations share sensitive data across boundaries, from insurance subrogation recovery to AI training data provenance. The same integrity problem, different high-stakes outcomes.