As AI tools become more accessible, employees are adopting them without formal approval from IT and security teams. While these tools may boost productivity, automate tasks, or fill gaps in existing workflows, they also operate outside the visibility of security teams, bypassing controls and creating new blind spots in what is known as shadow AI. While similar to the phenomenon of
Adobe Reader Zero-Day Exploited via Malicious PDFs Since December 2025
Threat actors have been exploiting a previously unknown zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December 2025.
The finding, detailed by EXPMON’s Haifei Li, has been described as a highly-sophisticated PDF exploit. The artifact (“Invoice540.pdf”) first appeared on the VirusTotal platform on November 28, 2025. A second
The finding, detailed by EXPMON’s Haifei Li, has been described as a highly-sophisticated PDF exploit. The artifact (“Invoice540.pdf”) first appeared on the VirusTotal platform on November 28, 2025. A second
The Hidden ROI of Visibility: Better Decisions, Better Behavior, Better Security
Beyond monitoring and compliance, visibility acts as a powerful deterrent, shaping user behavior, improving collaboration, and enabling more accurate, data-driven security decisions.
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Bitter-Linked Hack-for-Hire Campaign Targets Journalists Across MENA Region
An apparent hack-for-hire campaign likely orchestrated by a threat actor with suspected ties to the Indian government targeted journalists, activists, and government officials across the Middle East and North Africa (MENA), according to findings from Access Now, Lookout, and SMEX.
Two of the targets included prominent Egyptian journalists and government critics, Mostafa
Two of the targets included prominent Egyptian journalists and government critics, Mostafa
Eurail says December data breach impacts 300,000 individuals
Eurail B.V., a European travel operator that provides digital passes covering 33 national railways, says attackers stole the personal information of over 300,000 individuals in a December 2025 data breach. […]
Google Warns of New Campaign Targeting BPOs to Steal Corporate Data
Tracked as UNC6783, the threat actor is likely linked to Mr. Raccoon, the hacker behind the alleged theft of Adobe data from a BPO.
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Hackers exploiting Acrobat Reader zero-day flaw since December
Attackers have been exploiting a zero-day vulnerability in Adobe Reader using maliciously crafted PDF documents since at least December. […]
Adobe Reader Zero-Day Exploited for Months: Researcher
Reputable researcher Haifei Li has come across what appears to be a PDF designed to exploit an unpatched vulnerability.
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300,000 People Impacted by Eurail Data Breach
In December 2025, hackers stole names and passport numbers from the European travel company’s network.
The post 300,000 People Impacted by Eurail Data Breach appeared first on SecurityWeek.
Hackers steal $3.6 million from crypto ATM giant Bitcoin Depot
Bitcoin Depot, which operates one of the largest Bitcoin ATM networks, says attackers stole $3.665 million worth of Bitcoin from its crypto wallets after breaching its systems last month. […]