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Twitter Bans Ads From Russia's Kaspersky Lab

The CEO of Kaspersky Lab is demanding that Twitter explain its reason for the ad ban, which started in January.

 & Michael Kan Principal Reporter

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Twitter has banned ads from cybersecurity firm Kaspersky Lab, possibly over US government concerns regarding its ties to the Russian government.

A Twitter spokesperson would say only that Kaspersky Lab "operates using a business model that inherently conflicts" with the Twitter platform's ad practices. It pointed to a US Department of Homeland Security notice from last September that effectively labeled Kaspersky Lab a national security threat and called on government offices to stop using its security software.

"The Department is concerned about the ties between certain Kaspersky officials and Russian intelligence," the notice said. Under Russian law, the Kremlin can also compel Kaspersky Lab to help it spy on communications, the notice goes on to claim.

Twitter's decision isn't sitting well with Eugene Kaspersky, the CEO of the cybersecurity firm. On Friday, he complained in a tweet about the ad ban, and demanded that it explain.

"The majority of our promoted content on Twitter has been about cybersafety and research and reports about the information security industry," he wrote in a blog post.

The ad ban is the latest blow to Kaspersky Lab's business over its suspected ties with the Russian government. In September, Best Buy dropped the company's antivirus products from store shelves.

The security firm has rejected the spying accusations, but it did admit to accidentally downloading secret files from a US National Security Agency employee back in 2014. To clear the air, Kaspersky Lab has vowed to open its source code to independent review.

In his blog post, Kaspersky wrote that "other platforms could follow Twitter's example," but he vowed to fight any "unjustifiable acts akin to censorship," suggesting his company may take legal action against Twitter over the ban. In December, Kaspersky Lab sued the Department of Homeland Security over its ban.

"If this is a mistake please openly admit this. This would quash any doubts about potential political censorship on Twitter," Eugene Kaspersky said.

Despite the ad ban, Twitter has said the Russian security firm can continue operating over the platform, but only as a user.

About Our Expert

Michael Kan

Michael Kan

Principal Reporter

My Experience

I've been a journalist for over 15 years. I got my start as a schools and cities reporter in Kansas City and joined PCMag in 2017, where I cover satellite internet services, cybersecurity, PC hardware, and more. I'm currently based in San Francisco, but previously spent over five years in China, covering the country's technology sector.

Since 2020, I've covered the launch and explosive growth of SpaceX's Starlink satellite internet service, writing 600+ stories on availability and feature launches, but also the regulatory battles over the expansion of satellite constellations, fights with rival providers like AST SpaceMobile and Amazon, and the effort to expand into satellite-based mobile service. I've combed through FCC filings for the latest news and driven to remote corners of California to test Starlink's cellular service.

I also cover cyber threats, from ransomware gangs to the emergence of AI-based malware. In 2024 and 2025, the FTC forced Avast to pay consumers $16.5 million for secretly harvesting and selling their personal information to third-party clients, as revealed in my joint investigation with Motherboard.

I also cover the PC graphics card market. Pandemic-era shortages led me to camp out in front of a Best Buy to get an RTX 3000. I'm now following how the AI-driven memory shortage is impacting the entire consumer electronics market. I'm always eager to learn more, so please jump in the comments with feedback and send me tips.

The Best Tech I've Had:

  • My first video game console: a Nintendo Famicom
  • I loved my Sega Saturn despite PlayStation's popularity.
  • The iPod Video I received as a gift in college
  • Xbox 360 FTW
  • The Galaxy Nexus was the first smartphone I was proud to own.
  • The PC desktop I built in 2013, which still works to this day.

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