Three Mobile has been hit by another major data issue
Three Mobile customers have been urged to monitor their security protections after a worrying new data breach concerning the company’s user accounts was revealed.
Users reported that they were being shown personal details of other customers when logging in to their accounts on the company’s my3 app.
Information such as names, addresses and phone numbers was reportedly all revealed, showing a potentially worrying gap in Three’s own security processes.
Three Mobile has said it is investigating the issue
The problems began earlier this week, when Three customers began reporting that they were being confronted with other customer’s account details when logging in to the my3 app.
Along with the personal information, details such as call logs and past bills were also exposed.
Three uses flocked to social media to complain about the issue, with one calling the incident, “a shocking breach of data privacy” on Three’s official Facebook page.
Three confirmed that it was investigating a technical issue with its systems and urged those affected to contact its customer service department.
“We are aware of a small number of customers who may have been able to view the mobile account details of other Three users using My3,” a spokesman told The Guardian.
“No financial details were viewable during this time and we are investigating the matter.”
The news is particularly worrying for Three, which has now endured several major data breaches within the last few months.
Get Quotes on Home Insurance
The company may also be facing a probe from the Information Commissioner’s Office, which said that it “will be looking into this potential incident involving Three”.
“Data protection law requires organisations to keep any personal information they hold secure,” an ICO spokeswoman said.
“It’s our job to act on behalf of consumers to see whether that’s happened and take appropriate action if it has not.”
The biggest cyber-attacks, hacks and data breaches Wed, March 15, 2017
From viruses to data breaches, cyber-crime is far from a modern invention – here is Express.co.uk's list of some of the biggest attacks in history.
Play slideshow GETTY 1 of 13
Google's Chinese operations were targeted in 2009
Three was previously hit by a wide-ranging fraud attack last November, where customer accounts were hijacked by scammers looking to order and sell new handsets.
Over 200,000 three accounts were affected in the attack, with personal data such as names, addresses, dates of birth and method of payment all accessed.
The attack last November was blamed on hackers using an employee login to access its customer upgrade database, potentially putting its nine million-strong UK customer base at risk.
The hackers accessed customer accounts and upgraded them in order to intercept the new phones and sell them on.
Three only discovered the breach after customers filed complaints claiming that scam callers were attempting to gain access to their bank accounts.
If you think you've been the victim of a cyber-attack, you can check out Express.co.uk's guide to the next steps to take here.