Tesco has admitted that its rapid delivery service is down over 72 hours after its website was attacked by hackers.
The attempted security breach of Britain’s biggest retailer on Saturday left shoppers unable to order online and is thought to have cost around £15 million in lost sales.
A spokesperson claimed on Sunday night that the website and app was “back up and running” after IT staff “worked around the clock”.
However, the Grocery Gazette can report that Tesco’s 60-minute grocery service, Whoosh, is still offline.
READ MORE: Tesco to pilot rapid delivery service Whoosh
The supermarket is said to be focused on managing the demand for its regular home deliveries and “click and collect” services instead.
Whoosh will apparently return later this week, but the delay will further dent revenues.
The service was Tesco’s answer to quick commerce firms like Gorillas and Getir, which deliver groceries from a network of “dark stores”.
It has rapidly expanded since May, and until last Saturday was available in 88 Express stores across England and Wales.
Tesco was previously hacked in 2014, when it was forced to suspend customer accounts after thousands of people’s details were leaked online.
A separate attack on its banking arm cost it £2.5 million two years later.
Tesco insists there is “no reason to believe” that customer data has been seized in the hack this weekend.