What Internet Watch Foundation does

The Internet Watch Foundation (IWF), founded in 1996 and headquartered in Cambridge, UK, is a registered charity (Charity Number 1112398) that operates the UK's designated hotline for reporting online child sexual abuse material. It serves the UK public (via an anonymous reporting portal at iwf.org.uk), child victims seeking removal of non-consensual intimate imagery (through the Report Remove tool with Childline), and a global membership of more than 300 organisations across major technology platforms (Meta, Google, Microsoft, Apple, TikTok), UK telecoms (BT, Sky, Virgin Media), payment networks (Mastercard, Visa), and VPN providers (ExpressVPN, CyberGhost, Private Internet Access). IWF analysts assess reported content and proactively detect new material via web crawlers, hash-matching against the curated Image Hash List, URL blocking via the URL List, keyword monitoring, and the IntelliGrade severity-classification system.

IWF's technical stack couples human analyst review with automated detection (Image Intercept, Crawler, IntelliGrade), threat-intelligence feeds (Domain Alerts, Payment Brand Alerts, Virtual Currency Alerts), and victim-facing tools (Report Remove, the deterrent Chatbot built with Stop It Now and Pornhub, and the Echo Project linked to the UK Child Abuse Image Database). In 2025 the organisation identified over 8,000 AI-generated CSAM items, marked 317,101 abuse images, and disrupted 15,031 commercial CSAM websites — a 114% increase year-over-year. In 2026 IWF co-developed the open-source OpenBoundary toolkit with ExpressVPN for DNS-level CSAM blocking, and partnered with Public Interest Registry to deliver real-time alerts to domain registrars.

IWF earns revenue primarily through recurring corporate membership subscriptions (300+ members paying tiered annual fees for hash list, URL list, and alert service access), supplemented by donations and philanthropy (including a £5.1m lifeline from Nominet to the UK Safer Internet Centre), EU co-funding for international and policy work, and bespoke technology services. It operates internationally through INHOPE (the IWF Deputy CEO serves as President) and deploys branded reporting portals in 20+ jurisdictions across Africa, Latin America, Eastern Europe, and Asia.

Name

Internet Watch Foundation

Legal name

Internet Watch Foundation

Website

https://iwf.org.uk

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

1–10 employees

Short description

The Internet Watch Foundation (IWF), founded in 1996 and headquartered in Cambridge, UK, is a registered charity that operates the UK's designated hotline for reporting child sexual abuse material online. It serves the UK public, child victims, and 300+ corporate members across technology, telecoms, financial services, and VPN sectors via hash lists, URL blocking, and analyst-led content removal services.

Ownership category

akta.pro rank

Product category

Online Child Safety Services

SIC

Services-Social Services (8300)

akta.pro primary industry

Child Safety & Exploitation Prevention Operations (CSAM detection workflows, escalation) (BPAAALAK)

Keywords

• CSAM detection services
• Online child safety
• Content removal hotline
• Hash list services
• URL blocking services

Headquarters

HQ city

Histon

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Corporate Membership Fees: Technology companies, ISPs, financial services firms, and VPN providers pay membership fees to access IWF's hash lists, URL blocking services, and threat intelligence. Members include major tech firms (Meta, Google, Microsoft, Apple), telecoms (BT, Sky, Virgin Media), payment companies (Mastercard, Visa), and over 300 organizations globally.
2. Donations and Philanthropy: The charity accepts public donations through iwf.org.uk/donate/ and has partnership arrangements with charitable trusts. The UK Safer Internet Centre received £5.1m funding lifeline from Nominet.
3. EU Co-funding: The IWF receives European Union co-funding for international work and policy advocacy in the EU, particularly around child sexual abuse regulation and legislation.
4. Technology Services: IWF provides paid technology services to members including hash list deployment, URL blocking, simultaneous alerts, newsgroup services, and domain alerts. Services are available at different tiers based on membership level.

Pricing tiers

Go-to-market motion4 records

Distribution channels6 records

Marketing channels10 records

Core offering

IWF operates the UK hotline for anonymous reporting of child sexual abuse material (CSAM) and provides a suite of detection and removal services to member organizations. The charity offers hash lists, URL lists, keyword monitoring, proactive web crawling, and an image assessment service that enables technology platforms, ISPs, and financial services companies to identify and block CSAM. It also provides the Report Remove tool for under-18s to request removal of their own nude images.

Product overview

The Internet Watch Foundation (IWF) operates as a UK-based charity hotline providing a platform of interconnected content detection, blocking, and removal services. The core portfolio centers on hash-matching (Image Hash List), URL blocking (URL List), and keyword monitoring (Keywords List) services that members integrate into their platforms. Supporting these are add-on alert modules including Domain Alerts, Payment Brand Alerts, and Virtual Currency Alerts that enable members to disrupt CSAM distribution financially and technically. The IntelliGrade image classification system and proactive Crawler technology power IWF's analyst-led assessment and removal operations. Victim-focused services include Report Remove (for self-generated content removal) and the Echo Project (for victim identification and abuse image removal). Prevention tools include the Chatbot for offender intervention and educational resources like the AI Parent Guide. All services operate through membership-based access rather than a public API.

Differentiator

Problem solved

Functional benefit

Products and services

• Image Hash List A database of perceptual hashes of known child sexual abuse material that member organizations can integrate into their platforms to detect and block known CSAM images and videos. Used by technology platforms, ISPs, and hosting providers.
• URL List A list of URLs known to contain child sexual abuse material, used by member organizations to block user access to CSAM and trigger removal actions. Used by ISPs, network operators, and platforms.
• Keywords List A list of keywords associated with child sexual abuse material that member organizations can use to monitor search activity and identify users seeking CSAM. Used by search engines, platforms, and law enforcement.
• Report Remove A free, confidential tool for under-18s in the UK to request removal of nude or sexual images of themselves that have been shared online. Includes a helpline chatbot and caseworker support.
• IntelliGrade An image assessment service in which trained IWF analysts review and grade suspected CSAM images that cannot be automatically classified, returning a verdict to the originating member organization. Used by platforms with edge-case detection needs.
• Crawler A proprietary web crawler operated by IWF analysts to proactively search the open web for child sexual abuse material, generate new entries for the URL and Hash Lists, and initiate removal actions. Used internally by IWF and shared intelligence with members and law enforcement.
• Image Intercept A tool that enables member platforms to check user uploads in real time against IWF's hash datasets to identify and block known CSAM at the point of upload. Used by hosting and content platforms.
• Domain Alerts
• Payment Brand Alerts
• Virtual Currency Alerts
• Takedown Notices
• Newsgroup Services
• Echo Project A strategic project launched by IWF to extend the reach of its services and partnerships, enabling other organizations to leverage IWF tools and intelligence in their own child safety operations.
• OpenBoundary

Quantifiable outcome

• Over 8,000 AI-generated CSAM images and videos identified in 2025
• +5 more outcomes

Named customers6 records

Segments7 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration11 records

AI capability9 records

Feature11 records

Partnerships

20 partnerships are on record, tiered core and major.

• ExpressVPNcoreTechnology or Integration · 4 March 2026ExpressVPN developed OpenBoundary, a server-level CSAM blocking toolkit built in partnership with IWF. The technology blocks known CSAM domains at DNS level without traffic inspection or encryption breaking, preserving user privacy. The tool is being open-sourced under the 'Not on My Network' initiative. Fellow Kape Technologies brands CyberGhost and Private Internet Access are the first adopters, with plans for other VPN services, ISPs, and cloud platforms to integrate the framework.
• Public Interest Registry (PIR)coreStrategic or Co-development Partner · 22 October 2025Partnership between IWF and Public Interest Registry enables domain registrars to identify and disrupt websites engaged in the distribution of child sexual abuse material. The initiative provides registrars with tools for real-time alerts on harmful content, aiming to make it more difficult for criminals to operate online brands involved in child exploitation. PIR is the registry operator for .org domains.
• National Center for Missing and Exploited Children (NCMEC)coreStrategic or Co-development PartnerCross-border cooperation partnership with NCMEC for sharing intelligence on CSAM trends and international cases. The IWF data is referenced in NCMEC reports, and both organizations work together on global child protection initiatives. NCMEC processed over 21 million reports in 2025, including over 1 million involving AI-created images.
• INHOPEcoreStrategic or Co-development PartnerIWF is a founding member and active participant in INHOPE, the international association of hotlines for reporting illegal content including CSAM. IWF Deputy CEO Fred Langford serves as President of INHOPE. The partnership enables coordination across national hotlines worldwide.
• National Crime Agency (NCA)coreStrategic or Co-development PartnerIWF works closely with the UK's National Crime Agency on joint guidance for parents regarding AI-generated CSAM risks. The NCA and IWF jointly urge parents to limit sharing children's photographs online amid concerns that AI tools are scraping publicly shared images to create abuse material.
• Childline / NSPCCcoreStrategic or Co-development PartnerIWF operates the Report Remove helpline in collaboration with Childline (run by NSPCC), enabling children under 18 to report intimate images shared online without consent and request their removal. 394 sextortion reports were received through this helpline in 2025.
• GooglecoreTechnology or IntegrationLong-standing technology partnership with Google. Google has stated: 'The IWF combines the technical know-how with a deep understanding of the human cost of this awful crime. The organisation's work creates scale and impact to tackle this issue, and Google is proud to work so closely with the IWF.'
• Stop It NowcoreStrategic or Co-development PartnerPartnership with Stop It Now to operate a chatbot that targets people trying to access child sexual abuse online. The pioneering chatbot reduces searches for illegal sexual images of children and provides confidential support through a free helpline (0808 1000 900).
• Safe OnlinemajorStrategic or Co-development PartnerInternational partnership for child online protection. The Echo project launches in England and Wales to help child sexual abuse victims identify and remove online images, funded by Safe Online and the Graham Dacre Foundation.
• International Centre for Missing and Exploited ChildrenmajorStrategic or Co-development PartnerPartnership with ICMEC on international reporting portal projects and global child protection initiatives. ICMEC and IWF collaborate on training, technology sharing, and cross-border case coordination.
• DNSFiltermajorTechnology or IntegrationDNSFilter partnership enables blocking of CSAM content at DNS level. DNSFilter reported a 44% increase in blocked CSAM content in 2025, partly driven by a 26,362% increase in AI-generated CSAM videos detected by IWF.
• Black Forest LabsmajorStrategic or Co-development PartnerIWF and Black Forest Labs joined forces to combat harmful AI-generated content. Black Forest Labs released evaluation results showing their models demonstrate over 10 times fewer vulnerabilities for serious risks including synthetic non-consensual intimate imagery and CSAM compared to other leading open-weight image models.
• UK Safer Internet CentrecoreStrategic or Co-development PartnerIWF is part of the UK Safer Internet Centre alongside Childnet and South West Grid for Learning. The Centre received £5.1m funding lifeline from Nominet. IWF provides expertise on CSAM detection and removal within this consortium.
• Marie Collins FoundationcoreStrategic or Co-development PartnerPartnership with survivor advocacy organization providing real-life perspectives on technology-assisted abuse. The foundation contributes to IWF campaigns and policy work, emphasizing the ongoing harm from AI-generated abuse imagery to survivors.
• OfcomcoreStrategic or Co-development PartnerIWF and Ofcom reinforce partnership in fight against online child sexual abuse. IWF provides technical expertise and data to support Ofcom's implementation of the Online Safety Act, particularly around CSAM detection requirements for platforms.
• UKCCIS (UK Council for Child Internet Safety)majorStrategic or Co-development PartnerIWF participates in UKCCIS, a multi-agency body bringing together experts from government, industry, charities, and law enforcement to keep children safe online.
• EllipticmajorTechnology or IntegrationElliptic joined IWF to prevent the financing of child exploitation through cryptocurrencies and blockchain infrastructure, providing blockchain analytics to trace crypto payments to CSAM websites.
• ChainalysismajorTechnology or IntegrationPartnership to trace cryptocurrency transactions linked to CSAM commercial operations, helping disrupt the financial infrastructure supporting child exploitation.
• Stability AImajorTechnology or IntegrationStability AI joined IWF's mission to make the internet a safer space for children, working on AI safety measures to prevent generation of CSAM content.
• Council of EuropemajorStrategic or Co-development PartnerIWF participates in Council of Europe initiatives on child protection, including the Lanzarote Committee working to prevent child sexual exploitation.

Scale indicators13 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• National Center for Missing & Exploited Children: Operates the US CyberTipline as the country's designated reporting mechanism for CSAM, processing 21M+ reports annually. NCMEC is IWF's closest international counterpart and they share intelligence under a formal cross-border cooperation agreement.
• Canadian Centre for Child Protection: Operates Project Arachnid, a proactive CSAM detection crawler and global notice-and-takedown service, alongside Cybertip.ca. Directly comparable to IWF in mandate and technology approach.
• INHOPE Foundation: International association of internet hotlines coordinating CSAM reporting across 50+ countries. IWF is a founding member and IWF's Deputy CEO serves as INHOPE President, making it both a peer and a strategic alliance partner.
• Thorn: US-based tech nonprofit that builds tools (Safer, Spotlight, NoFiltr) to combat child sexual exploitation. Comparable in technology-forward nonprofit model and focus on CSAM detection, though US-centric and more developer-tool oriented.
• NSPCC (National Society for the Prevention of Cruelty to Children): UK's leading child protection charity, operating the Childline helpline that IWF's Report Remove tool is integrated with. NSPCC is a UK peer in child safety with overlapping victim-support functions.
• International Centre for Missing & Exploited Children (ICMEC): Global non-profit working to combat child exploitation and missing children through training, policy, and technology initiatives. Direct peer in international coordination; IWF and ICMEC collaborate on cross-border training and reporting portals.
• Stop It Now! UK & Ireland: Prevention-focused helpline that IWF partnered with to develop its CSAM intervention chatbot. Comparable mission around preventing child sexual abuse and providing confidential support to at-risk individuals.
• Safe Online: International non-profit funding online child protection initiatives including IWF's Echo Project. Comparable funding and policy role in the global child online safety ecosystem.

Regional players

• Childnet International: UK-focused children's internet safety charity and fellow member of the UK Safer Internet Centre. Comparable in education and awareness mission but more UK-centric and less focused on detection technology than IWF.
• Internet Matters: UK not-for-profit industry body helping parents keep children safe online. Comparable in audience (parents, professionals) but focused on education rather than detection/blocking technology.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/IWFhotline
• Facebookfacebook.com/InternetWatchFoundation
• LinkedInlinkedin.com/company/iwf

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Internet Watch Foundation