FBI agents told employees they were not in trouble, and that the bureau was merely gathering facts about how Kaspersky works, including to what extent the US operations ultimately report to Moscow.
A Senate spending bill, which proposes Defence Department military funding plans, says (p.12) the DoD may prohibit Kaspersky products, which could include anti-virus software, over fears the firm could be vulnerable to "Russian government influence". There has been no public evidence offered, however, to substantiate accusations against the company, whose tools are found on computers throughout the U.S.
The Untouchables visited the homes of Kaspersky employees in multiple U.S. cities for a quiet word.
Kaspersky Lab confirmed in a statement on Wednesday that Federal Bureau of Investigation agents have had "brief interactions" with some of its USA employees - discussions that the company described as "due diligence" chats.
The bill would need to pass the full Senate and House of Representatives and be signed by President Donald Trump in order to become law.
Kaspersky's anti-virus software is popular in the United States and around the world, though USA officials have always been suspicious that the company may have ties to Russian intelligence agencies. We are not sure how that works.
Kaspersky also told Reuters that the U.S. government has got it all wrong.
"As a private company, Kaspersky Lab has no ties to any government, and the company has never helped, nor will help, any government in the world with its cyberespionage efforts", the company said in a statement today.
Lawmakers raised concerns that Moscow might use the firm's products to attack American computer networks, a particularly sensitive issue given allegations by US intelligence agencies that Russian Federation hacked and leaked emails of Democratic Party political groups to interfere in the 2016 presidential election campaign.
"Kaspersky Lab is available to assist all concerned government organisations with any ongoing investigations, and the company ardently believes a deeper examination of Kaspersky Lab will confirm that these allegations are unfounded".