# Messaging and browser security vulnerabilities > Live situation record from CLSTR: https://clstr.news/situations/messaging-and-browser-security-vulnerabilities > Updated: 2026-09-12T07:27:38.000Z. Sources: 4. Developments: 2. Researchers and security experts have identified several vulnerabilities affecting messaging platforms and web browsers. Initial findings highlighted flaws in WhatsApp and Signal, where attackers could potentially track a user’s approximate location and usage patterns by measuring the Round Trip Time (RTT) of message delivery notifications. Furthermore, WhatsApp’s multi-device architecture was noted as a potential attack vector that could allow attackers to identify a target’s operating system. Subsequent reports expanded on these risks, noting a specific security flaw on certain Android devices, including the Google Pixel 6 Pro and Oppo K13, which could allow unauthorized access to photo galleries via the video call interface while the device is locked. In a broader cybersecurity context, Google also issued urgent updates for Chrome to patch 26 vulnerabilities, some of which were already being exploited in the wild. ## Timeline ### 2026-09-12: Cybersecurity alerts: Google Chrome updates and WhatsApp privacy risks Cybersecurity alerts highlight critical Google Chrome vulnerabilities, WhatsApp privacy flaws on certain Android devices, and essential mobile device safety practices to prevent data and financial theft. 2 sources. https://clstr.news/cluster/cybersecurity-alerts-google-chrome-updates-and-whatsapp-privacy-risks ### 2026-09-11: WhatsApp and Signal face security flaws affecting privacy Security flaws in WhatsApp and Signal may allow attackers to track user locations and device status via phone numbers and exploit multi-device synchronization to identify operating systems. 2 sources. https://clstr.news/cluster/whatsapp-and-signal-face-security-flaws-affecting-privacy --- Cite as: Messaging and browser security vulnerabilities. CLSTR, https://clstr.news/situations/messaging-and-browser-security-vulnerabilities