LONDON, Oct 7 — UK online fashion giant Asos said yesterday it was investigating “unauthorised activity involving third-party platforms” after its customers received a phone alert saying the retailer had been hacked.

Asos, which has 17 million active customers worldwide, said personal information like names and contact details “may have been accessed” but that it did not believe payment card information or account passwords were impacted.

The company noted its website and app were operating normally following the incident, which prompted its share price to slump initially by almost 15 per cent in London.

Shares in the company had partially recovered by mid-afternoon but were still down yesterday by nearly10 per cent.