S21 Global Alliance Database

The worlds biggest CSAM intelligence database​

Over 2 BILLION records and growing, contribution-led.

S21 Global Alliance Database software

Over a billion reasons to get involved​


Reduce manual categorisation​​


Rescue more victims through shared intelligence​

organised crime

Spot trends and patterns revealing organised crime​

global community

Be part of the global community helping to remove CSAM online​

Instant access to victim identification and categorisation intelligence​

No development, maintenance or support fees​

The project is contribution-led, with all maintenance absorbed by Semantics 21.​ 

Investigators gain access to unique file hashes​, category labels, and (if provided by the contributing organisation) investigator notes, organisation pseudonym or name, and more. The amount and type of data shared is decided by the contributing organisation.

Instant access to victim identification and categorisation intelligence

How it works

1. Member organisation exports its S21 intelligence database​

2. The file is encrypted and uploaded to a secure S21 repository​​

3. All uploaded data is merged into one encrypted master file​

4. The latest S21 Global Alliance Database is issued


Secure and reliable by design

We continue to champion best practice and compliance when it comes to managing the Global Alliance Database.

Intelligence exported is automatically encrypted, and uploaded through an encrypted platform and the master database file always remains encrypted.

 All our solutions and services are totally secure and have been developed with GDPR and other relevant guidelines. It’s part of the reason we’re trusted by some of the most data-sensitive sectors, including policing, military, and online technology platforms.

How to access the Global Alliance Database?

S21 Discovery users


Law enforcement

Commercial forensic providers

S21 LASERi-X users


Law enforcement

Commercial forensic providers

NGO's and charities

Third Party Access

Contact for connection

Commercial third party tools

NGO's and charities

Storage and social media platforms

Non-S21 investigators

Save more victims, process more cases, and protect your team’s mental wellbeing.​

Don’t let your toolset let you down.

Request a demo or sales information pack​

Please complete the form with valid company or agency information, including a company or agency-issued email address, we will need to confirm your credentials before issuing a free trial licence.