TalkTalk has moved to assure broadband customers who received emails warning them they may have downloaded a harmful virus.
Many subscribers received multiple emails from firstname.lastname@example.org telling them a potential threat had been detected on at least one of their devices.
Recipients were therefore urged to make sure any viruses they have are removed straight away.
Customers turned to TalkTalk's community forum to discuss whether or not the emails were genuine, as well as how the provider could know whether or not a virus has affected their system.
TalkTalk subsequently confirmed that the email was genuine, but sent multiple times by mistake.
"One of our top priorities is keeping you and your family safe online, our Homesafe and Supersafe products helps keep you and your devices protected," the provider said.
"Whilst we don’t monitor our customers' internet traffic, our next-generation DNS platform is able to identify traffic patterns from malware and potential threats on the network enabling us to notify our customers."
Speaking to ISPreview.co.uk, a TalkTalk spokesperson added that the company is "continually investing" in new ways to protect its customers, as helping them keep their devices free from malware is a "top priority for us".
The representative stated that while its systems can identify devices that may have been infected with malware if they are connected to its networks, these checks are "done in the background and at no point do we monitor customers' browsing history".