The claims that PDD's software contains harmful code have been refuted, and the company has not yet responded to requests for comment. As of Monday, the designation and warnings were in effect in Hong Kong. Users of Google's mobile services, blocked in China, could see the warning. In a rare move, Google stopped users from downloading Pinduoduo from one of China's largest online merchants, advising them to remove it from their devices if they already had it. Read Also: Pinduoduo 'Silently' Launches US Online Shopping Site Temu to Battle With Amazon Experts Fear Worse Labor Practice Google Warns Users About Pinduoduo The researcher added that these malicious app versions have also been gaining access to information and files. Igor Golovin, a security researcher at Kaspersky, told Bloomberg News in a statement that 'Some versions of the Pinduoduo app contain malicious code that exploits known Android vulnerabilities to elevate privileges, download and execute additional malicious modules, some of which have infected users.' The security company discovered that some versions of the Pinduoduo app contain malicious code that exploits known Android vulnerabilities to elevate privileges and download and execute additional malicious modules, gaining access to users' information and files. Kaspersky's findings claim that older app versions exploited system software to install backdoors, enabling unauthorized access to user data and information. NANSHA, CHINA - NOVEMBER 18: David Liu, VP of Stratagy, Pinduoduo speaks with Arjun Kharpal, Senior Correspondent of CNBC during Day 2 of CNBC East Tech West at LN Garden Hotel Nansha Guangzhou on Novemin Nansha, Guangzhou, China. (Photo : Zhong Zhi/Getty Images for CNBC International)

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