A CSAM intelligence database is a controlled, law-enforcement-only dataset that lets authorised investigators compare intelligence across cases, agencies and jurisdictions, so that relevant material, victim indicators and connections can be surfaced beyond the boundaries of a single investigation.
The S21 Global Alliance Database (GAD) contains over 3.5 billion law-enforcement-contributed intelligence records, supporting victim identification, cross-case intelligence analysis and authorised investigative collaboration at global scale.
It is an intelligence layer, not an evidence store. The GAD supports comparison against a global intelligence dataset to surface relevant matches and links, while all assessment and decision-making remains with the investigator.
Relevant material, victim indicators and connections often exist beyond the boundaries of a single investigation, creating gaps that case-by-case review can miss. Organising evidence does not reveal how it connects.
The GAD helps authorised teams compare intelligence across a global dataset, surfacing links that may otherwise remain hidden. Instead of replacing existing case systems, it supports comparison against a global intelligence dataset so relevant links can be surfaced for investigator assessment.
Identify connections between investigations that would otherwise remain unseen across separate datasets.
Surface likely victim-related matches to support safeguarding review and prioritise high-risk material.
Access intelligence from a large global CSAM dataset, extending visibility beyond local or national investigative boundaries.
Built to support real investigative workflows, not as a standalone repository, but as an intelligence layer alongside existing systems.
Compare intelligence across a global dataset, surfacing links that may otherwise remain hidden across cases, agencies and jurisdictions.
The GAD supports intelligence discovery and comparison. It does not replace investigator assessment, legal review, evidential handling or safeguarding decision-making.
GAD is not designed to function as an evidence store. It is an intelligence layer that helps authorised investigators understand where material may connect across cases, agencies and jurisdictions.
It maintains separation from case evidence systems. GAD is not a case evidence system and is not designed to replace forensic repositories or case management platforms. It supports intelligence comparison while keeping formal evidence handling within existing investigative systems.
GAD is designed for authorised investigative environments where intelligence sharing must remain controlled, secure and operationally useful.
GAD integrates into investigative workflows without requiring replacement of existing systems. It supports comparison against a global intelligence dataset to surface relevant matches, links and connections. All assessment and decision-making remains with the investigator.
The S21 GAD is free to join. All we ask is that you contribute intelligence so the entire community can benefit. Use of the S21 GAD is optional, and our tools function fully with or without it.
All contributed data is encrypted, including merged data, and is never decrypted or accessed by Semantics 21. No data is used for AI training or commercial purposes.
The S21 GAD is offline and does not use the internet to connect, and it is time-locked so it becomes unusable after a defined period.
Only law enforcement and approved related organisations can access the S21 GAD, and data is accessible only through approved S21 tools.
No development, maintenance or support fees, fully funded by Semantics 21 to support global collaboration.
An intelligence layer that works alongside existing systems, keeping formal evidence handling within your own investigative platforms.
The S21 Global Alliance Database contains over 3.5 billion law-enforcement-contributed intelligence records from trusted partners worldwide, supporting victim identification, cross-case intelligence analysis and authorised investigative collaboration at global scale.
GAD helps authorised investigators connect intelligence that may otherwise remain separated by case, system or jurisdiction, supporting earlier insight, stronger prioritisation and more focused investigative review. See how it works in practice: The Thread That Linked Two Countries, The Crypto List, The Clean Slate That Wasn't, The Five Minute Breakthrough and From Revenge To Redemption.
You can also browse the full case study library.
The CSAM auto-categorisation and victim identification tool that surfaces and shares GAD intelligence.
Secure offline transcription of audio and video evidence, so investigators can search and report spoken content without the cloud.
It contains over 3.5 billion law-enforcement-contributed intelligence records, making it the world's largest community-driven CSAM and Counter-Terrorism database.
No. The GAD is not designed to function as an evidence store. It is an intelligence layer that helps authorised investigators understand where material may connect across cases, while formal evidence handling stays within existing investigative systems.
No. The GAD integrates into investigative workflows without requiring replacement of existing systems, and works alongside other databases with no need to choose or switch.
Start a free trial
