Digital Fingerprint, Email, Phone Number and IP Address Tool

HM Revenue & Customs

HMRC is the UK's tax and customs authority. It collects the money that pays for the UK's public services and gives financial support to people.

As the UK's tax and customs authority, our responsibilities include collecting taxes, administering benefits, helping people with Tax-Free Childcare, enforcing the National Minimum Wage, and working at the heart of the UK's border systems.

We have a policy partnership with HM Treasury to develop and deliver tax policy. HM Treasury leads on strategic work and tax policy development, supported by HMRC. HMRC leads on policy maintenance and delivery, supported by HM Treasury.

HMRC is a high-volume business. Almost every UK individual and business is a direct customer. We are also one of the UK's biggest employers, with 59,000 fulltime equivalent employees nationwide.

We want to be a trusted, modern tax and customs department - operating an effective, resilient system that gives the public confidence in our ability to deliver.

This means modernising what we do and how we do it. Technology is at the heart of that change. By making smarter use of the data, we hold we can, over the coming years, build a system that helps people get their tax right first time, reduces mistakes and makes it harder to bend or break the rules.

Chief Digital and Information Office (CDIO)

HMRC's Chief Digital and Information Officer (CDIO) leads the department's IT and security function and is responsible for all the technology powering one of the biggest digitally enabled transformations anywhere in Europe.

The CDIO leads HMRC's digital and data strategies and has significant involvement in the cross-government agenda. The CDIO is also responsible for running one of the biggest and most complex IT estates in the UK and implementing HMRC's pioneering IT sourcing strategy.

We have several key business transformations ongoing including programmes such as Securing our Technical Future, Making Tax Digital, Customer Experience transformation and a critical role facilitating EU Exit.

In order to facilitate a complete monitoring service of HMRC front-end digital services, HMRC critically require the ability to see what devices, email addresses, telephone numbers and IP addresses our customers are using and to match these against 'known bad' attributes previously involved in fraud or attributes that have been compromised.