A sophisticated cyber attack dubbed ‘Browser Syncjacking’ has been uncovered by SquareX security researchers, revealing how attackers can exploit Chrome extensions to gain complete control over victims’ devices.

Attack Methodology:
1. Attackers create a malicious Google Workspace domain with disabled security features
2. A seemingly legitimate Chrome extension is published on the Web Store
3. Once installed, the extension secretly connects to the attacker’s managed Google Workspace
4. Users are prompted to enable Chrome sync through injected content
5. After synchronization, attackers gain access to passwords and browsing history
6. The browser is compromised through a fake software update (demonstrated using Zoom)

Technical Impact:
– Complete browser control
– Access to web applications
– Ability to install additional malicious extensions
– Control over file downloads
– Access to system resources via Chrome’s Native Messaging API
– Potential for keylogging, webcam access, and microphone control

The attack is particularly dangerous because:
– Requires minimal permissions
– Needs little user interaction
– Shows no obvious signs of compromise
– Difficult to detect without technical expertise
– Leverages trusted Chrome functionality

This attack method demonstrates how seemingly harmless browser extensions can pose significant security risks, highlighting the need for increased vigilance when installing browser extensions, even from trusted sources.