Mobile network Three UK's customer details exposed in homepage blunder

Mobile operator Three UK's website was showing visitors other customers' names, postal addresses, phone numbers, email addresses and more – all without asking for a login.
Alarmed Reg reader Chris immediately tweeted at Three to ask what on Earth was going on, querying why Three's site was displaying different people's data to him every time he changed page.
The site was showing him as logged in even though he'd only gone to the mobile operator's homepage.
"When you load their site over your mobile internet connection, it recognises you and automatically logs you in," Chris told us. "I was doing this on my home Wi-Fi (which isn't Three), so it should've required me to log in manually when I first went to their site. I guessed it might've either redirected me to a session for a valid user who was accessing at the same time, or some blip which didn't recognise me and just assigned another user's ID instead."
"I wasn't able to to view any payment details – card or direct debit, and I wasn't able to load any detailed bills to view itemised activity," added Chris. Three claims to have around 10 million registered subscribers.
While our reader waited for a response from Three (it replied to him on Twitter an hour and a half after his initial tweet), he tipped off El Reg. As we investigated, we noticed the company website went down for a little while with the standard "under maintenance" page displayed – and came back up again after about an hour. Chris said other people's data was no longer visible once the site returned.
The nature of the data breach suggests that potentially the entire customer database along with some of the personal data held on file may have been exposed.
Despite repeated contact with Three's PR representatives, none of The Register's questions about the potential size or scale of the breach have been answered.
Judging by the URLs visible in some of the other screenshots Chris sent us, which included the letters /new, the company's techies may have accidentally deployed an under-construction revamp of the site to the mobe firm's production servers. This is merely speculation and Three has not responded to questions on this.
The Information Commissioner's Office was unable to say, at the time of publication, if Three had reported the breach.
An ICO spokesperson told us: “Three has made us aware of an incident and we will be making enquiries.”
A Three UK spokesperson told us: “A small number of customer[s] have reported an issue to us regarding my3. We have blocked access to my3 while we investigate the issue.”
Three UK wanted to make it known that only four people had complained about being able to view any random Three customer's personal data by simply visiting its website and not even needing to log in. El Reg is very happy to make this clear.
source theregister

Latest Jobs
-
- Contact 12 month- Security Operations- Crowdstrike Falcon Insight EDR / Analyst.
- United Kingdom
- Dependent on experience
-
Security Operations engineer / Analyst with Crowdstrike Falcon Insight EDR experience for a 12 month contract. Experienced Contractor with Crowdstrike Falcon Insight: Endpoint detection and Response (EDR) experience needed - 12 month rolling project. Implementation, configuration and Analyst experience needed with Crowdstrike Falcon Insight: (EDR) Migration project- relocating capability internationally. technically implementing, configuration of that that migration and then transition to BAU role monitoring. DCL Search exclusive associate Project.
-
- SailPoint Consultant
- London
- Upto £75,000 plus benefits
-
SailPoint Consultant is needed for an expanding Financial Service business, this is an exciting time to join the Business as they are in the Process of deploying both IAM and PAM solutions and this consultant will form a key part of the IAM team Location can be flexible but would require the individual to come into the London office a couple of times a month for team meetings and face to face project reviews Duties include · Engage in the Identity & Access Management project to deliver SailPoint IdentityNow and Privileged Access Management · On-board applications and users into IAM tools and customise or configure integrations as required · Regularly review, secure and recertify privileged roles in applications, databases and operating systems · Implement least privilege, just-in-time access, password rotation and vaulting wherever possible · Migrate application authentication to Single Sign-On through the use of SAML and OAuth · Implement and enforce the use of MFA where possible, focusing on critical applications and risky sign-ins · Provide technical support to Centrify and SailPoint users Key experience required: Previous experience with SailPoint, including integrating and deploying into a business, onboarding users and applications, supporting users and performing manual administration tasks. Experience with SAML and OAuth to migrate applications to Single Sign-on. If you are interested in hearing more please reach out to me for more information
-
- Centrify Consultant
- London
- Upto £75,000 plus benefits
-
A Privileged Access Management Consultant is needed for an expanding Financial Service business, this is an exciting time to join the Business as they are in the Process of deploying a Centrify PAM solution,, this consultant will form a key part of the team Location can be flexible but would require the individual to come into the London office a couple of times a month for team meetings and face to face project reviews Duties include · On-board applications and users into PAM tools and customise or configure integrations as required · Regularly review, secure and recertify privileged roles in applications, databases and operating systems · Implement least privilege, just-in-time access, password rotation and vaulting wherever possible · Migrate application authentication to Single Sign-On through the use of SAML and OAuth · Implement and enforce the use of MFA where possible, focusing on critical applications and risky sign-ins · Provide technical support to Centrify users You would also gain expsoure with the IAM toolset as part of an Identity Access deployment. Key experience required: Previous experience with a PAM tool (Centrify would be an added bonus but not essential) including integrating and deploying into a business, onboarding users and applications, supporting users and performing manual administration tasks. Experience with SAML and OAuth to migrate applications to Single Sign-on. If you are interested in hearing more please reach out to me for more information
-
- SOC team lead- Deputy SOC manager - Managed Security Services, Bradford. Exclusive
- Bradford
- £70,000 +
-
SOC team lead- Deputy SOC Manager - Managed Cyber Security Services, Bradford. Exclusive Identifier project. Technical team lead needed to join a Managed Cyber Security Services business. The role will be a hands on lead role and technical escalation point for the team. You will also be responsible for leading, mentoring, growing and developing the team. You will be the deputy SOC manager and be involved in the strategic growth of the capability. A managed security services background is essential, specifically within a managed security operations capability. Current hands on support experience across Firewall, SIEM, Incident Response is essential.