Moscow-based security software maker Kaspersky Lab said on Monday it has asked a U.S. federal court to overturn a Trump administration ban on use of its products in government networks, saying the move deprived the company of due process.

The Department of Homeland Security (DHS) in September issued a directive ordering civilian government agencies to remove Kaspersky software from their networks within 90 days. It came amid mounting concern among U.S. officials that the software could enable Russian espionage and threaten national security.

President Donald Trump signed into law on Tuesday legislation that bans the use of Kaspersky Lab within the U.S. government, capping a months-long effort to purge the Moscow-based antivirus firm from federal agencies amid concerns it was vulnerable to Kremlin influence.

The ban, included as part of a broader defense policy spending bill that Trump signed, reinforces a directive issued by the Trump administration in September that civilian agencies remove Kaspersky Lab software within 90 days. The law applies to both civilian and military networks. “The case against Kaspersky is well-documented and deeply concerning. 

Britain’s main cyber security agency on Friday warned British government agencies to avoid using anti-virus software from Russian companies, the latest in a series of moves targeting Moscow-based security software maker Kaspersky Lab.

In a letter to departmental permanent secretaries, the director of the UK National Cyber Security Centre, Ciaran Martin, said Russian-made anti-virus software should not be used in systems containing information that would harm national security if it was accessed by the Russian government. He said his agency is in talks with Kaspersky Lab to develop a system for reviewing its products for use in Britain. 

The personal computer of an NSA worker who took government hacking tools and classified documents home with him was infected with a backdoor trojan, unrelated to these tools, that could have been used by criminal hackers to steal the US government files.

The Moscow-based antivirus firm, which has been accused of using its security software to improperly grab NSA hacking tools and classified documents from the NSA worker's home computer and provide them to the Russian government, says the worker had at least 120 other malicious files on his home computer.

WikiLeaks has resumed its CIA leaks and it has now started publishing source code and other files associated with tools allegedly developed by the intelligence agency.

In March, WikiLeaks began publishing documentation files describing what appeared to be CIA hacking tools as part of a leak dubbed Vault 7. Roughly two dozen tools and projects were disclosed over the course of several months. Now, after a two-month break, WikiLeaks announced a new round of leaks dubbed Vault 8, which provides source code and analysis for CIA tools. The organization pointed out that, similar to Vault 7, Vault 8 will not expose any zero-day or other vulnerabilities that could be used for malicious purposes. 

Moscow-based antivirus software maker Kaspersky Lab said on Wednesday that its security software had taken source code for a secret American hacking tool from a personal computer in the United States.

In September, U.S. officials ordered Kaspersky’s products removed from government computers, saying the firm was vulnerable to Kremlin influence and that using the software could jeopardize national security. After that announcement, the Wall Street Journal reported on Oct. 5 that hackers working for the Russian government appeared to have targeted a National Security Agency (NSA) worker by using Kaspersky software to identify classified files in 2015.

Moscow-based Kaspersky Lab said on Monday it will ask independent parties to review the security of its anti-virus software, which the U.S. government has said could jeopardize national security, citing concerns over Kremlin influence and hijacking by Russian spies.

Kaspersky, which research firm Gartner ranks as one of the world’s top cyber security vendors for consumers, said in a statement that it would submit the source code of its software and future product updates for review by a broad cross-section of computer security experts and government officials. It also vowed to have outside parties review other aspects of its business, including software development. 

The Trump administration on Wednesday told U.S. government agencies to remove Kaspersky Lab products from their networks, saying it was concerned the Moscow-based cyber security firm was vulnerable to Kremlin influence and that using its anti-virus software could jeopardize national security.

The decision represents a sharp response to what U.S. intelligence agencies have described as a national security threat posed by Russia in cyberspace, following an election year marred by allegations that Moscow weaponized the internet in an attempt to influence its outcome. 

Earlier this summer the House Science Committee sent letters to 22 US government agencies requesting information on their use of Kaspersky Lab security products.

As the federal government continues to investigate claims of ties between the Trump administration and Russia, officials in Washington have expressed concern that the government's use of software from Kaspersky Lab—a well-known security vendor based in Russia—could compromise domestic intelligence. This request represents the most recent action in an aggressive campaign by Congress.

The Trump administration on Tuesday removed Moscow-based Kaspersky Lab from two lists of approved vendors used by government agencies to purchase technology equipment, amid concerns the cyber security firm's products could be used by the Kremlin to gain entry into U.S. networks.

The delisting represents the most concrete action taken against Kaspersky following months of mounting suspicion among intelligence officials and lawmakers that the company may be too closely connected to hostile Russian intelligence agencies accused of cyber attacks on the United States.