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Weird Duolingo Tweet Is Legit, But Don't Respond With Your Credit Card Number

Duolingo says a tweet announcing the 'death' of its mascot and encouraging people to sign up for its premium service is real, but obviously don't post private info publicly.

 & Michael Kan Principal Reporter

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A marketing campaign from the language teaching app Duolingo is inadvertently phishing users for their credit card numbers. 

The marketing stunt involves Duolingo's account on Twitter/X, which has over 930,000 followers. On Tuesday, the account announced that the app’s owl mascot, Duo, had died under mysterious circumstances. 

“Authorities are currently investigating his cause of death and we are cooperating fully. Tbh [to be honest], he probably died waiting for you to do your lesson, but what do we know," it tweeted.

Although the message was written as a joke, it contains an eyebrow-raising request about users sharing their reactions on social media: "If you feel inclined to share, please also include your credit card number so we can automatically sign you up for Duolingo Max in his memory."

Obviously, you shouldn't post your credit card number on X because everyone can see it. The request made us wonder if Duolingo’s account had been hacked since asking users for their credit card details through well-known brands is a classic phishing tactic. But in an email, the educational company confirmed Duo’s death is part of a marketing campaign.

“Our social team just enjoys a little chaotic humor. Rest assured, we would never actually ask users for their credit card information (unless it was to pay for Duo’s extremely expensive funeral, of course—kidding!),” Duolingo’s PR team said.

Still, it looks like at least a few users actually responded to Duolingo’s tweet with credit card details, including the expiration date and three-number security code. “Here is my dad’s credit card," one person replied, hopefully in jest.

(Credit: X/Twitter)
(Credit: X/Twitter)

Duolingo's tweet has been viewed over 4 million times and counting. Fortunately, it looks like some of the users are replying with made-up payment card details, perhaps well aware that the stunt is a joke. But we're not so sure about a few others.

In the meantime, Duolingo told PCMag: “Our brand marketing has always been known for its playful and irreverent tone, and this tweet is just another example of that. That said, we always encourage our learners to be mindful of online security and never share sensitive information publicly."

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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