New MacSync Stealer Malware Attacking macOS Users Using Digitally Signed Apps

Cybersecuritynews •Tushar Subhra Dutta • December 23, 2025

A new version of MacSync Stealer malware is targeting macOS users through digitally signed and notarized applications, marking a major shift in how this threat is delivered. Unlike older versions that required users to paste commands into Terminal, this updated variant operates silently in the background. The malware comes disguised as a legitimate installer, distributed […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

New MacSync Malware Exploits Apple Notarization to Steal User Credentials A new variant of the MacSync stealer malware has been identified, exploiting Apple's notarization process to bypass security measures on macOS devices. This malware poses a risk to sensitive user data by disguising itself as legitimate software. Recent reports detail the tactics used by cybercriminals to persuade users to install this malicious software. 16 sources 51

Extracted Entities

New MacSync Stealer Malware Attacking macOS Users Using Digitally Signed Apps

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Extracted Entities

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Malware (1)

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