PamStealer Mimics Maccy Clipboard Manager Silently Harvests Data and Clipboard Contents

Cybersecuritynews •Abinaya • July 4, 2026

PamStealer is a newly identified macOS infostealer that disguises itself as the popular open-source clipboard manager “Maccy” while silently harvesting sensitive user data. Discovered by Jamf Threat Labs, the malware uses a stealthy two-stage infection chain designed to evade detection and blend into normal macOS activity. The attack begins with a malicious disk image file […]

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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.

PamStealer: New macOS Infostealer Targets Users via Fake Maccy Manager PamStealer is a newly identified macOS infostealer that masquerades as the legitimate Maccy clipboard manager. The malware employs a two-stage attack method, starting with a malicious AppleScript that downloads a Rust-based payload. It verifies Mac login passwords using Apple's Pluggable Authentication Modules (PAM) before stealing sensitive data, enhancing the effectiveness of stolen credentials. The attack vector involves a fraudulent website mimicking the official Maccy page, leading to the download of a malicious disk image. Once executed, PamStealer collects browser cookies, saved credentials, clipboard contents, and more, while also establishing persistence on the infected system. The malware's design incorporates social engineering tactics to convince users to enter their passwords. Jamf Threat Labs has documented this campaign, emphasizing its unique features compared to typical macOS infostealers. 60 sources 68

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PamStealer Mimics Maccy Clipboard Manager Silently Harvests Data and Clipboard Contents

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