Tesco’s website and app were down for much of the weekend after being targeted by a suspected hack.
The grocer’s online services crashed on Saturday following what it called an attempt “to interfere with our systems”.
It meant thousands of Tesco shoppers were unable to place orders over the weekend - the retailer receives around 1.3 million online orders every week.
Tesco initially said there was “an issue” but admitted yesterday that there had been deliberate disruption to its ecommerce platform.
But it insisted: “There is no reason to believe that this issue impacts customer data and we continue to take ongoing action to make sure all data stays safe.”
Tesco’s website eventually re-opened for customers late last night following a near-48-hour outage. A spokeswoman said: “Our online grocery website and app are now back up and running. Our teams have worked around the clock to restore service, and we’re really sorry to our customers for the inconvenience caused.”
Tesco added on Twitter that it was using a temporary “virtual waiting room” to manage the high volume of traffic.
Britain’s biggest grocer was also targeted by hackers back in 2014. It was forced to deactivate online customer accounts after the details of more than 2,000 customers were posted online.
Two years later, hackers stole £2.5m from the accounts of 9,000 Tesco Bank customers in a separate attack.
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