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Chinese Olympics App Has ‘Devastating’ Flaw, Says Analyst

The “simple” flaw is in the encryption of the MY2022 app, which is used to monitor Covid-19 and is mandatory for Games attendees

Workers prepare the biathlon shooting range in Zhangjiakou for the Winter Olympic Games. Photo: AFP.


An application that all attendees at the Beijing Olympics must use has encryption flaws that could allow personal information to leak, a Canadian cyber security watchdog said Tuesday.

The “simple but devastating flaw” is in the encryption of the MY2022 app, which is used to monitor Covid-19 and is mandatory for athletes, journalists and other attendees of the games in China’s capital.

The flaw could allow health information, voice messages and other data to leak, warned Jeffrey Knockel, author of the report for Citizen Lab, a research institute at the University of Toronto’s Munk School of Global Affairs and Public Policy.

The International Olympic Committee responded to the report by saying users can disable the app’s access to parts of their phones and that assessments from two unnamed cyber security organisations “confirmed that there are no critical vulnerabilities”.


‘User Is in Control’

“The user is in control over what the … app can access on their devices,” the committee told AFP, adding that installing it on cellphones isn’t required “as accredited personnel can log on to the health monitoring system on the web page instead”.

The committee said it had asked Citizen Lab for its report “to understand their concerns better”. Citizen Lab said it notified the Chinese games organising committee in early December but received no reply.

“China has a history of undermining encryption technology to perform political censorship and surveillance,” Knockel wrote.

“As such, it is reasonable to ask whether the encryption in this app was intentionally sabotaged for surveillance purposes or whether the defect was born of developer negligence,” he added.

The flaws affect SSL certificates, which allow online entities to communicate securely. MY2022 doesn’t authenticate SSL certificates, meaning other parties could access the app’s data, Knockel wrote.


Medical Information

While the app is transparent about the medical information it collects as part of China’s efforts to screen Covid-19 cases, he said “it is unclear with whom or which organisation(s) it shares this information.”

MY2022 also contains a list called “illegalwords.txt” of “politically sensitive” phrases in China, many of which relate to China’s political situation or its Tibetan and Uighur Muslim minorities.

These include keywords like “CCP evil” and Xi Jinping, China’s president, though Knockel said it was unclear if the list was being actively used for censorship purposes.

Because of these features, the app may violate “China’s own laws and national standards pertaining to privacy protection, providing potential avenues for future redress,” he wrote.


  • AFP with additional editing by George Russell




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George Russell

George Russell is a freelance writer and editor based in Hong Kong who has lived in Asia since 1996. His work has been published in the Financial Times, The Wall Street Journal, Bloomberg, New York Post, Variety, Forbes and the South China Morning Post.


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