S21 Global Alliance Database (S21 GAD): Revolutionising CSAM Investigations With Unmatched Global Intelligence

In the fight against child sexual abuse material (CSAM), the need for accurate, timely, and secure intelligence is more crucial than ever. Semantics 21 (S21) understands this urgency and offers a game-changing solution through the S21 Global Alliance Database (S21 GAD)—the largest global CSAM intelligence database available. With over 3 billion records and growing rapidly, contributed exclusively by law enforcement agencies worldwide, the S21 GAD is an indispensable tool for investigators aiming to identify and protect victims while simultaneously bringing perpetrators to justice.

At the core of the S21 GAD’s power is its ability to streamline investigations, reduce time spent reviewing irrelevant materials, and provide investigators with immediate access to a wealth of international data. S21’s commitment to technology-driven solutions ensures that every victim matters—a driving principle that powers our mission to create a safer world through collaboration and innovation.

Uniting Forces. Protecting the Innocent.

For nearly a decade, Semantics 21 has stood shoulder to shoulder with law enforcement agencies worldwide – earning not only their trust but also national recognition, including the prestigious Queen’s Award for Enterprise: Innovation in 2019 and the King’s Award for Enterprise: Innovation in 2024. These honours reflect our unwavering commitment to supporting those on the front lines of the fight against child sexual abuse material (CSAM).

At the heart of everything we do is a simple but powerful belief: Every Victim Matters. We don’t just build technology – we build tools that empower investigators to act faster, smarter, and with greater impact.

Our flagship tool, S21 LASERi-X, is already helping to identify thousands of victims each year, enabling rapid categorisation of CSAM, surfacing critical intelligence, and supporting the pursuit of justice. But today, we go further.

Introducing the S21 Global Alliance Database (GAD) – the world’s largest CSAM intelligence database with over 3 billion law enforcement contributed records, and growing rapidly.


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Although only two years old, the S21 GAD has already made a significant impact across the globe. Trusted by agencies in the UK, USA, Canada, and many others, it is accelerating case processing, aiding victim identification, and safeguarding investigator mental wellbeing by drastically reducing the volume of material that must be manually reviewed.

The database is growing rapidly, fuelled by contributions from law enforcement worldwide. This collaborative intelligence-sharing model enables investigators to benefit from each other’s categorisation work, surface potential victims faster, and operate with unmatched efficiency – all while supporting each other’s resilience.

The growth and early adoption of the S21 GAD speak volumes: investigators need a solution that is freeeasyscalable, and accurate – and that’s exactly what we’ve delivered. Previous attempts were embroiled in inaccuracies, siloed environments, commercialisation, and came with eye watering costs – this is proudly different.

S21 LASERi-X delivers powerful results within an organisation. The S21 Global Alliance Database delivers global transformation.

Now is the time to get involved. With bold plans for expansion and new capabilities on the horizon, the S21 GAD offers an unprecedented opportunity to enhance investigations and protect more victims than ever before.

Access is free for law enforcement. Join the alliance. Make the difference.

Semantics 21 products are trusted by thousands of investigators and hundreds of organisations across the world, including those mentioned above

Key Features and Benefits of the S21 Global Alliance Database (S21 GAD)

The S21 GAD provides investigators with a powerful tool to accelerate investigations and improve the efficiency of digital forensics work. Key features and benefits include:

Free Access for Law Enforcement:
– The S21 GAD is completely free to law enforcement and associated agencies, offering unrestricted access to critical global intelligence at no cost.

Global Intelligence Network:
– With over 3 billion records and growing rapidly, the S21 GAD includes CSAM, revenge pornography, counter-terrorism material, and more, allowing investigators to identify known content and victims faster.

Efficient Case Processing:
– Pre-categorisation of Files: Instantly match files against the S21 GAD, reducing review times by automatically identifying known content.
– Pre-categorises 70%+ of Media: Efficiently sort through media, saving time and improving case turnaround.


Real-time Victim Identification:
– Global Victim Identification: Quickly locate potential victims, including those in unknown CSAM files, through an expansive database with millions of relevant records.
– Cross-border Collaboration: Facilitate the seamless exchange of intelligence between international law enforcement agencies.

Enhanced Security & Privacy:
– The S21 GAD contains only hash and metadata, with no images or videos stored, prioritising privacy and security.
– End-to-End Encryption and GDPR Compliance: Fully secure with end-to-end encryption and GDPR-compliant processes, ensuring safe handling of sensitive data.

Data Integrity:
– Dynamic Voting System: A self-cleansing system that helps avoid inaccuracies, maintaining the integrity and reliability of the database.
– Secure, Contribution-led Database: Only law enforcement-contributed data, ensuring accuracy and relevancy.

Why the S21 Global Alliance Database (S21 GAD) Matters

The S21 GAD offers a unique advantage: it connects investigators to a vast network of information that is central to the fight against CSAM and other forms of online exploitation. Here’s how the S21 GAD helps:

Faster Investigations:
– With the ability to match evidence against a global intelligence network instantly, investigators can reduce time spent reviewing irrelevant material, allowing them to focus on critical files that can lead to the identification of victims and perpetrators.

Increased Victim Identification:
– Through its database, investigators can identify potential victims even when the abuse is not directly linked to other known cases, broadening the scope of their search and increasing the likelihood of finding survivors.


Secure, Contribution-led Database:
– The S21 GAD only includes records contributed by law enforcement agencies, ensuring no images or videos are stored. It contains hash and metadata only, prioritising privacy and security.

Future Developments and Opportunities

• Social Media Integration:
– Our next phase is to work with social media companies to allow them to probe a simplified version of the S21 GAD. This version will help them determine if a file being uploaded is notable, enabling immediate intervention to prevent the upload and take down illicit material. Only by working together as Police, vendors and social media can we hope to stop this CSAM epidemic.

• Collaboration with Digital Forensic Providers:
– Following that, we plan to welcome third-party digital forensic providers to integrate with the S21 GAD. Many of these providers have already signed up, and their participation will further expand the database’s reach and utility. Please encourage your tool of choice to reach out for connection to the S21 GAD for your investigations.

Why You Can’t Afford to Miss Out

If you’re not using the S21 Global Alliance Database (S21 GAD), you’re missing out on a revolutionary tool that’s significantly speeding up investigations, helping to rescue more victims, and ensuring the mental wellbeing of your team. The S21 GAD provides you with the intelligence you need to process cases faster and make a bigger impact on the fight against CSAM.


Now is the time to get connected, learn more, and explore how the S21 GAD can transform your investigations. Watch our webinar to see how it works, or visit our website to learn more about how to leverage the power of the S21 GAD in your organisation.

At Semantics 21, we are committed to supporting you in your mission to protect vulnerable individuals, solve crimes, and bring justice to those who exploit the innocent. Get connected today and become part of the change.

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