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Category — Google Calendar
Malicious npm Package Leverages Unicode Steganography, Google Calendar as C2 Dropper

Malicious npm Package Leverages Unicode Steganography, Google Calendar as C2 Dropper

May 15, 2025 Malware / Threat Intelligence
Cybersecurity researchers have discovered a malicious package named "os-info-checker-es6" that disguises itself as an operating system information utility to stealthily drop a next-stage payload onto compromised systems. "This campaign employs clever Unicode-based steganography to hide its initial malicious code and utilizes a Google Calendar event short link as a dynamic dropper for its final payload," Veracode said in a r eport shared with The Hacker News. "Os-info-checker-es6" was first published in the npm registry on March 19, 2025, by a user named "kim9123." It has been downloaded 2,001 times as of writing. The same user has also uploaded another npm package called "skip-tot" that lists "os-info-checker-es6" as a dependency. The package has been downloaded 94 times . While the initial five versions exhibited no signs of data exfiltration or malicious behavior, a subsequent iteration uploaded on May 7, 2025, has ...
Thousands of Google Calendars Possibly Leaking Private Information Online

Thousands of Google Calendars Possibly Leaking Private Information Online

Sep 17, 2019
"Warning — Making your calendar public will make all events visible to the world, including via Google search. Are you sure?" Remember this security warning? No? If you have ever shared your Google Calendars, or maybe inadvertently, with someone that should not be publicly accessible anymore, you should immediately go back to your Google settings and check if you're exposing all your events and business activities on the Internet accessible to anyone. At the time of writing, there are over 8000 publicly accessible Google Calendars, searchable using Google engine itself, that allow anyone to not only access sensitive details saved to them but also add new events with maliciously crafted information or links, security researcher Avinash Jain told The Hacker News. Avinash Jain , a security researcher from India working in an e-commerce company, Grofers, who previously found vulnerabilities in other platforms like NASA, Google, Jira, and Yahoo. "I was able...
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