The Apple Inc customers were targeted by hackers over the weekend in the first campaign against Macintosh computers using a pernicious type of software known as ransomware, as revealed by researchers with Palo Alto Networks Inc.
Ransomware, one of the fastest-growing types of cyber threats, encrypts data on infected machines, then typically asks users to pay ransoms in hard-to-trace digital currencies to get an electronic key so they can retrieve their data.
Security experts estimate that ransoms total hundreds of millions of dollars a year from such cyber criminals, who typically target users of Microsoft Corp’s Windows operating system.
Palo Alto Threat Intelligence Director Ryan Olson said the “KeRanger” malware, which appeared on Friday, was the first functioning ransomware attacking Apple’s Mac computers.
“This is the first one in the wild that is definitely functional, encrypts your files and seeks a ransom,” said Olson.
Hackers infected Macs through a tainted copy of a popular program known as Transmission, which is used to transfer data through the BitTorrent peer-to-peer file sharing network, Palo Alto said in a blog post. When users downloaded version 2.90 of Transmission, later on, their Macs were infected with the ransomware, the blog said.
An Apple representative said the company had taken steps over the weekend to prevent further infections by revoking a digital certificate that enabled the rogue software to install on Macs. The representative declined to provide other details.
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