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
-
- Security Analyst. Financial Services. UK. Permanent
- Unknown
- N/A
-
CH7863 Security Analyst. End User . Financial Services Security Analyst needed to monitor and manage a security suite of tools within an End User environment. The Security Analyst will be responsible monitoring, configuring, fine tuning, incident management and generally improving the security tool capability. Specific experience with CyberArk, Tripwire Log Center and Tripwire Enterprise is highly desirable). Current experience with Vulnerability management and penetration testing is highly desirable. Specifically the ability to effectively manage 3rd party pen tests. You will be working within a specialist security team reporting to the CISO. Experience working within an end user environment within financial services is highly desirable. Flexible location. This is an exclusive role to DCL Search & Selection. To book a call please use my Calendy link https://calendly.com/chris-holt/arranged-call-with-chris-holt-soc-role-
-
- DevSecOps - Security design / review consultant. SC Clearance. London
- London
- N/A
-
CH7858 London £70,000 DevSecOps - Security design / review consultant. DevSecOps - Security design / review consultant will ensure that newly created, public facing apps are secure by design and by default by aligning them to current / best practice security policies and standards into the design phases. The individual must have a technical software / application development background with specalist experinece in secure architecture design. (Frameworks, processes, best practice etc) Practical experience translating and ensuring that the OWASP top 10, ISO27001, HMG frameworks requirements are reviewed and embedded into project designs which are implemented is essential. Experience working projects through a full development lifecycle is key. You will work along side the design and project teams to idenitfy and mitigate risks throughout the design phases. This is a permanent role. SC clearance is essential as is the ability to get to the London office. (When appropiate #covid) Security DevSecOps consultant. To arrange a discreet call book via https://calendly.com/chris-holt/devsecopp--security-design-review-consultant
-
- CONTRACTOR Cyber Vulnerability Analyst, NESSUS, Rapid 7, SC clearance required.
- London
- N/A
-
Cyber Vulnerability analyst NESSUS, Rapid 7, needed for IMMEDIATE 3 month contract MUST have / be able to achieve UK SC clearance role to work within a live environment within a public sector department. The individual must have experience in using various security methods and tools such as Rapid7 and NESSUS scan for / identify vulnerabilities, prioritise them according to risk and raise appropriate tickets for remediation / follow up. In depth experience utilising Nessus highly beneficial. Current cyber public sector experience highly desirable.
-
- Internal Security Auditor, Level 1 Service Provider (ISO27001)
- London
- Upto 55,000 plus benefits
-
Internal Security Auditor ISO 27001, PCI, needed to join a Cyber team within this expanding Fintech business. The Internal Security Auditor will have end to end responsibility for planning, delivering, remediating any findings etc. Experience working within financial services is highly desirable. This Is a great time to join a newly formed and growing Cyber team within a rapidly expanding fintech, that is taking a major share of its market. We are looking for someone with experience, (but not to be limited to) a mix of Information Security standards, frameworks, audit principles, controls / policies and the management and use of the technical tooling etc. ISO 22301, ISO 27001, NIST Cybersecurity Framework etc An ideal candidate will be working within an end user environment with a cyber consultancy background. Experience taking a company through accreditation is highly desirable Experience managing internal stakeholders, technical teams and external third parties essential Flexible working, but with the ability to get into London. This is an exclusive role to DCL Search & Selection.