Barclays has stopped offering free Kaspersky antivirus products to its customers after an official warning about Russian security software.
The bank e-mailed 290,000 The heads of cybersecurity in the UK are warning government departments not to use software from Russian companies for systems related to national security.
Barclays said he addressed the issue of the precautionary decision.
The safety of its customers "very seriously".
The National Cyber Security Center (NCSC) is writing to all government departments telling them that the Kremlin could exploit Russian security software.
But officials stressed that they were not saying that members of the public or companies should stop using Kaspersky's products, which are used by around 400 million people worldwide.
Barclays told customers that they would no longer offer Ka free software spersky "following the information that has been shared in the news," but advised people with the software already installed not to take "any action".
Barclays wrote to customers: "The UK government has recommended [by the NCSC] to eliminate any Russian products from all highly sensitive systems clbadified as secret or superior.
" We took the precautionary decision of not offering the software Kaspersky to new users. However, there is nothing to suggest that customers should stop using Kaspersky. "
He continued:" At this time there is no action to take. It is important that you continue to protect yourself with antivirus software. "
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The 290,000 people who received emails from Barclays are all online banking customers, who downloaded Kaspersky in the last decade as part of of a 12 month trial offered by the bank.
Many of these clients, including individuals who could be government employees, may have canceled their subscription once the free trial ended.
Ian Levy, technical director NCSC, said there was no evidence that the guidance to government departments applies to the general public.
"For example, we really do not want people to do things like start Kaspersky software in general since it has little sense, "he said …
A spokesperson for Barclays said:" Although this new orientation is not addressed to members of the public, we have made the decision to withdraw the offer of softwa Re Kaspersky from our customers' website. "