To our readers dedicated to Web3 security: The integration of AI tools with web browsing presents novel and critical security challenges. A recent alarming discovery highlights how easily massive amounts of sensitive conversational data can be compromised via seemingly benign browser extensions.
Cybersecurity researchers have identified two malicious Chrome extensions, collectively boasting over 900,000 users, designed specifically to exfiltrate confidential conversational data from major AI platforms, including OpenAI ChatGPT and DeepSeek, alongside general browsing history. This stolen data is transmitted directly to attacker-controlled infrastructure.
This incident is profoundly relevant to the Web3 community. Users often engage AI assistants regarding sensitive topics such as smart contract auditing, DeFi strategies, and private key best practices. The exposure of such dialogue provides attackers with a goldmine of intelligence, potentially enabling highly targeted phishing campaigns, sophisticated social engineering attacks, or direct exploit attempts targeting user wallets based on inferred operational details.
We strongly urge the Web3 audience to exercise extreme caution regarding browser extensions that promise enhanced AI functionality. Adhere strictly to the principle of least privilege. Always scrutinize the requested permissions—especially broad access to ‘read and change all your data on the websites you visit.’ The financial implications of compromised AI conversations in the Web3 space are catastrophic, potentially leading to immediate asset loss. Trust zero, verify everything.
Source: Two Chrome Extensions Caught Stealing ChatGPT and DeepSeek Chats from 900,000 Users
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