Reference
Organization directory
Who's who in child protection online — grouped by what each organization actually does, with how to reach or report to each. The map of the ecosystem, in one place.
Reporting hotlines & clearinghouses
Where to report CSAM or exploitation. If you don't know or trust the platform, report straight to one of these.
NCMEC CyberTipline
US / global
The US congressionally-mandated clearinghouse; routes reports to law enforcement and platforms. Also runs Take It Down and the Child Victim Identification Program.
report.cybertip.org · 1-800-843-5678
Visit ↗Internet Watch Foundation (IWF)
UK / global
Finds, assesses, and removes CSAM worldwide via notice-and-takedown; publishes the field's leading threat data and licenses hash lists to industry.
iwf.org.uk
Visit ↗Cybertip.ca (C3P)
Canada
Canada's national tipline, operated by the Canadian Centre for Child Protection.
cybertip.ca
Visit ↗INHOPE
Global network
The network of 50+ national hotlines across 50+ countries; in-network removal averages ~1.4 days vs ~41 days out-of-network. Find your country's hotline here.
inhope.org
Visit ↗FBI
US
Investigates online child exploitation, including financial sextortion of minors.
tips.fbi.gov · 1-800-CALL-FBI
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Detection-technology providers
The technology that finds CSAM at scale — hash-matching for known content, classifiers for novel content, and cross-platform signal-sharing.
Thorn (Safer)
US / global
Builds Safer, a CSAM hash-matching + AI-classifier product used by 60+ platforms; co-authored the 'Safety by Design for Generative AI' industry standard. Runs NoFiltr youth education.
thorn.org · safer.io
Visit ↗Technology Coalition (Lantern)
Industry alliance
Runs Lantern, the first cross-platform signal-sharing program (hashes, keywords, URLs) so an offender pushed off one platform is detectable on the next.
technologycoalition.org
Visit ↗Project Arachnid (C3P)
Canada / global
Proactively crawls the open web for known CSAM and issues removal notices at scale (tens of millions issued since 2017).
projectarachnid.ca
Visit ↗Microsoft PhotoDNA
Global
The original perceptual-hashing technology for detecting known CSAM, licensed widely to platforms and NGOs.
microsoft.com/photodna
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Perpetration prevention & help-seeking
Confidential help for people worried about their own thoughts or behavior toward children — the demand-side lever. Attraction is distinct from offending; viewing CSAM harms a real child every time, and these services exist to stop harm before it happens.
Lucy Faithfull Foundation / Stop It Now (UK)
UK / Ireland
The world's leading perpetration-prevention helpline; confidential, anonymous support for people concerned about their own or another's behavior.
Stop It Now UK: 0808 1000 900
Visit ↗Stop It Now (USA)
US
US confidential helpline for people concerned about child sexual abuse, including their own thoughts.
1-888-773-8368
Visit ↗Prevention Project Dunkelfeld / Troubled Desire
Germany / global
Pioneering anonymous treatment for people attracted to minors who have not offended; Troubled Desire is its self-help web tool, available globally.
troubled-desire.com
Visit ↗Moore Center 'Help Wanted' (Johns Hopkins)
US
Anonymous online prevention course for young people attracted to minors, led by Elizabeth Letourneau; built on the principle that attraction does not doom a person to offend.
moore.jhu.edu
Visit ↗ReDirection (Protect Children, Finland)
Finland / global
Anonymous self-help program for dark-web CSAM users; 26,000+ survey responses and tens of thousands of program sessions, with most users reporting reduced or ceased use.
suojellaanlapsia.fi
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Research, policy & standards
The bodies that produce the evidence base, set terminology, and coordinate the global response.
WeProtect Global Alliance
Global
Multistakeholder alliance of governments, companies, and civil society; publishes the Global Threat Assessment and the Model National Response framework.
weprotect.org
Visit ↗ECPAT International
Global
Network against the sexual exploitation of children; author of the Luxembourg Guidelines, the authority on survivor-centered terminology ('CSAM,' not 'child pornography').
ecpat.org
Visit ↗Childlight (University of Edinburgh)
Global / academic
Global child-safety data institute; its 'Into the Light Index' (2024) estimated ~302 million children affected by online sexual abuse/exploitation in a year.
childlight.org
Visit ↗INTERPOL (ICSE database)
Global / law enforcement
Runs the International Child Sexual Exploitation database used by police worldwide to identify victims and offenders across borders.
interpol.int
Visit ↗Stanford Internet Observatory
US / academic
Research on platform abuse and CSAM, including the LAION-5B dataset finding and careful analysis of how CyberTipline data is (mis)interpreted.
cyber.fsi.stanford.edu
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Survivor support & image removal
Services for victims and survivors of CSAM and image-based abuse.
Take It Down (NCMEC)
Global
Free service to remove or stop the spread of nude/sexual images of someone who was under 18, using on-device hashing — the image never leaves your device.
takeitdown.ncmec.org
Visit ↗StopNCII.org
Global
The equivalent for adults (18+), including AI deepfakes; run by the UK Revenge Porn Helpline with platform partners.
stopncii.org
Visit ↗Cyber Civil Rights Initiative (CCRI)
US
Support and a crisis helpline for victims of non-consensual intimate imagery; maintains platform-removal guidance.
1-844-878-2274 · cybercivilrights.org
Visit ↗RAINN
US
The largest US anti-sexual-violence organization; operates the National Sexual Assault Hotline.
1-800-656-HOPE · rainn.org
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Related: Where to report (114 platforms) · Prevention · Get images removed · The statistics
Last reviewed May 2026. Contact details change; verify via each organization's site.