QQ

In 2020 a massive security incident involving the Chinese instant messaging platform QQ led to the exposure of personal data belonging to hundreds of millions of users. The breach primarily compromised internal user identifiers linked directly to verified mobile phone numbers. This large scale exposure was attributed to data scraping or an internal database vulnerability that allowed third parties to map digital identities to physical phone lines. The incident highlights significant privacy risks for users within the Tencent ecosystem as the leaked data facilitates targeted phishing and unauthorized tracking.