Lingerie firm Victoria's Secret has taken down its US website and says it has halted some in-store services following what it has described as a "security incident".
The normal site has been replaced by a customer notice which says it is "working around the clock to fully restore operations".
It says its stores - and those of its spin-off, PINK - are still open for business.
The company's UK website is unaffected.
In a statement, the company detailed the action it has been taking.
"We immediately enacted our response protocols, third-party experts are engaged, and we took down our website and some in-store services as a precaution," it said.