This report performs the first public analysis of MMTLS, the main network protocol used by WeChat, an app with over one billion users. The report finds that MMTLS is a modified version of TLS, however some of the modifications have introduced cryptographic weaknesses.| The Citizen Lab
A sophisticated spear phishing campaign has been targeting Western and Russian civil society. In collaboration with Access Now, and with the participation of numerous civil society organizations, we uncover this operation and link it to COLDRIVER, a group attributed by multiple governments to the Russian Federal Security Service (FSB).| The Citizen Lab
In this report, we examine cloud-based pinyin keyboard apps from nine vendors (Baidu, Honor, Huawei, iFlyTek, OPPO, Samsung, Tencent, Vivo, and Xiaomi) for vulnerabilities in how the apps transmit user keystrokes. Our analysis found that eight of the nine apps identified contained vulnerabilities that could be exploited to completely reveal the contents of users’ keystrokes in transit. We estimate that up to one billion users could be vulnerable to having all of their keystrokes intercepted...| The Citizen Lab
A network of at least 123 websites operated from within the People’s Republic of China while posing as local news outlets in 30 countries across Europe, Asia, and Latin America, disseminates pro-Beijing disinformation and ad hominem attacks within much larger volumes of commercial press releases. We name this campaign PAPERWALL. We attribute the PAPERWALL campaign to Shenzhen Haimaiyunxiang Media Co., Ltd., aka Haimai, a PR firm in China based on digital infrastructure linkages between the ...| The Citizen Lab
A comparative analysis of security, privacy, and censorship issues in TikTok and Douyin, both developed by ByteDance.| The Citizen Lab
