Top 6 Biggest Data Breaches in the UK of All Time

Last updated: August 14, 2023 Reading time: 3 minutes
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6 Biggest Data Breaches

Data breaches have become common worldwide, with the US and UK topping the charts regularly over the past decade.

The frequency of the breaches isn’t limited to one or two a year. Likewise, the target of the attacks is also not limited to large organizations alone. Any big or small company that maintains valuable data like consumers’ financial records, credit card numbers, email ids, and passwords is on the list of hackers.

Talking about data breaches in the UK alone, we see many breaches that affected not just corporates but also banks and even gas companies. Let’s look at some of the recent data breaches in the UK.

Massive Data Breaches of UK

Talk Talk (2015)

One of the leading telecommunication companies in the UK, Talk Talk, was hit by a cyberattack in October 2016. The data breach was initially assumed to hit a significant percentage of its 4 million customers. However, it was later reported that only 157,000 of that 4 million customers’ data was breached. Over 15,000 bank account details were breached out of the . Fortunately, the stolen card numbers were “obscured,” i.e., invalid for any transaction.