Hack on Three affected 76,000 more customers than first thought
Hackers who targeted the mobile operator Three accessed the details of 76,000 more customers than first thought.
Three people were arrested in November after hacking into a database of customers entitled to upgrade their phone and used the information to obtain eight devices before being stopped.
About 400 high-value phones were also stolen from Three’s high street stores during a series of burglaries over a four-week period.
At the time, Three contacted 133,827 customers whose details had been accessed by the hackers.
The information included names, addresses, dates of birth, mobile numbers, handset types, contract start and end dates, billing dates, tariffs and whether customers pay by card, cash or direct debit.
This week Three said it had contacted a further 76,373 customers who had been affected, adding that no fraudulent activity had been identified against these customers.
The company said no financial information, bank details, passwords or pin numbers had been accessed as these are not stored on the upgrade system.
Three is advising its customers to be cautious about anyone contacting them.
“If it is a call from Three and you are in any doubt that it is genuine, end the call and call us back on 333 from your Three mobile,” the company said in a statement.
“We advise caution when dealing with other service providers you may use. As always, customers should never give out any banking information.”
Affected customers are being offered free enhanced credit checks. More information is available on Three’s website.
Three said it is continuing to work with law enforcement agencies including the National Crime Agency (NCA) and the National Cyber Security Centre (NCSC).
In November, the National Crime Agency arrested a 48-year-old man from Orpington, Kent, and a 39-year-old man from Ashton-under-Lyne, Manchester on suspicion of computer misuse offences.
A 35-year-old man from Moston, Manchester, was arrested on suspicion of attempting to pervert the course of justice.
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