In an email to 290,000 online banking customers on Saturday (2 November), Barclays said: "The UK government has been advised to remove any Russian products from all highly sensitive systems classified as secret or above.
"We've made the precautionary decision to no longer offer Kaspersky software to new users. However, there's nothing to suggest that customers need to stop using Kaspersky."
Barclays said it treated the security of its customers "very seriously". The offer was available at point of use to internet banking customers to boost their security as 12-month free trial.
A spokesman for Kaspersky told IBTimes UK said the company was very "disappointed" that Barclays had discontinued its offer to its customers.