Hackers are to blame for Tesco's website and app going down, the retailer confirmed this morning.

Frustrated shoppers have been unable to access services since yesterday, with disruption continuing into today as the company frantically tries to get it up and running again.

Tesco has been inundated with anxious customers unable to arrange deliveries or make changes to their orders.

The supermarket giant this morning said that the outage followed an attempt to "interfere" with its systems.

A spokesman said there was "no reason" to believe that customer data had been compromised.

A Tesco spokesman told The Mirror this morning: “Since yesterday, we’ve been experiencing disruption to our online grocery website and app.

"An attempt was made to interfere with our systems which has caused problems with the search function on the site. We’re working hard to fully restore all services and apologise for the inconvenience.

Tesco confirmed that an attempt was made to interfere with its systems (

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Getty Images/Image Source)

"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.”

Shoppers first reported problems attempting to access the site and app yesterday, and thousands of customers continue to report problems to DownDetector, which monitors website outages.

The website issue has left customers unable to make changes to pre-arranged orders.

This morning one irritated shopper posted on Twitter: "I have just had 4 boxes of Pepsi max delivered and no other food as your website has been down for 24 hours and I wasn’t able to edit my basket!!"

Responding to one customer who was trying to amend her order today, Tesco wrote: "Good morning, unfortunately our IT Teams are still working really hard to resolve the issue but we currently don't have any further updates as to when this will be resolved. I am really sorry for any inconvenience caused by this."

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