Microsoft and Google provide web services to Chinese companies that are blacklisted in the U.S.

A number of U.S. companies, including Microsoft, Google and Amazon, provide various web services to Chinese companies that Washington believes are involved in human rights abuses and are therefore on the U.S. “black list,” CNBC reported citing the site Top10VPN, which examines VPN services and privacy issues.

Last October, the U.S. Department of Commerce reported that 28 Chinese organizations were blacklisted on suspicion of involvement in human rights violations against the Uighur population. In particular, companies producing facial recognition and video surveillance systems have been sanctioned.

According to the channel, the Top10VPN report says the technology giants provide Chinese companies blacklisted by the U.S. with “basic web services that run their websites. According to Top10VPN, China’s Dahua Technology and Hikvision use Amazon and Google’s web services, while Microsoft’s services are used by SenseTime and Megvii, which the channel estimates are among the “most valuable Chinese artificial intelligence startups.

Digicert, Lets Encrypt, Entrust, GeoTrust and others have also been added to the list of US technology companies whose services are used by Chinese firms on the US “blacklist”. In addition, it is claimed that Facebook and Twitter are also providers of content delivery network (CDN) services for the Chinese company Hikvision.

None of the American companies in question have yet provided comments to the channel.