In a recent feature from (In)Securities, Bill Toulas of BleepingComputer highlighted an emerging cyber threat known as “syncjacking.” This method exploits the synchronization features of browsers like Chrome to hijack user sessions across devices. By seducing users into installing malicious extensions, attackers gain access to synced data, including passwords, browsing history, and authentication tokens.
With Google yet to release a patch, this issue underscores the double-edged sword of convenience features in digital tools—offering ease of use on one hand but posing significant security risks on the other.
What is Syncjacking?
Syncjacking is a cyberattack where criminals manipulate browser synchronization functionalities to control a user’s digital environment. The attack starts with a simple browser extension, which, while appearing benign, can override user settings and log into a maliciously controlled profile.
How Does Syncjacking Work?
The attack unfolds in several steps:
- Malicious Setup: Attackers create a deceptive domain and browser extension.
- Deceptive Installation: They trick users into installing the extension using cleverly crafted emails or compromised websites.
- Profile Takeover: Once installed, the extension forces the browser to log into a profile controlled by the attackers.
- Data Extraction: Attackers deploy tools to harvest personal and professional data from the victim.
The Broader Implications
For businesses, the stakes are exceptionally high. A single compromised browser can lead to a significant breach, exposing sensitive corporate data, customer information, and financial records.
For individuals, it means a direct threat to personal privacy and financial security.
Protective Measures Against Syncjacking
To shield yourself from such threats:
✅ Verify Extensions: Only add extensions from verified publishers and understand the permissions they request. If an extension seems overly invasive, it’s best to avoid it.
✅ Use Two-Factor Authentication (2FA): Adding this additional layer of security can significantly deter unauthorized access.
✅ Regular Updates: Keep your browser and its extensions updated to benefit from the latest security patches.
✅ Educational Awareness: Both at an individual and organizational level, understanding the landscape of cyber threats like syncjacking is crucial.
Conclusion
As our reliance on digital tools grows, so does the sophistication of threats against them. Syncjacking exemplifies how features designed for user convenience can be subverted for malicious purposes.
By staying informed and vigilant, we can protect our digital identities and maintain the integrity of our personal and professional digital environments. This balance of convenience and security is not just advisable; it is essential in our interconnected world.
🔗 Read the full BleepingComputer article here by Bill Toulas.
About the Author
Kim Chandler McDonald (She/Her)
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Kim is the Co-Founder and CEO of 3 Steps Data, driving data and digital governance solutions. She is also the Global VP of CyAN, an award-winning author, and a dedicated advocate for cybersecurity, digital sovereignty, compliance, and end-user empowerment.