ThreatsDay Bulletin: Hybrid P2P Botnet, 13-Year-Old Apache RCE and 18 More Stories

Thursday. Another week, another batch of things that probably should’ve been caught sooner but weren’t. This one’s got some range — old vulnerabilities getting new life, a few “why was that even possible” moments, attackers leaning on platforms and tools you’d normally

The Hidden Security Risks of Shadow AI in Enterprises

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

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

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

New Chaos Variant Targets Misconfigured Cloud Deployments, Adds SOCKS Proxy

Cybersecurity researchers have flagged a new variant ofmalware called Chaosthat’scapable of hitting misconfigured cloud deployments, marking an expansion of the botnet’s targeting infrastructure. “Chaos malware is increasingly targeting misconfigured cloud deployments, expanding beyond its traditional focus on routers and edge devices,” Darktrace said in

Masjesu Botnet Emerges as DDoS-for-Hire Service Targeting Global IoT Devices

Cybersecurity researchers have lifted the curtain on a stealthy botnet that’s designed for distributed denial-of-service (DDoS) attacks. Called Masjesu, the botnet has been advertised via Telegram as a DDoS-for-hire service since it first surfaced in 2023. It’s capable of targeting a

APT28 Deploys PRISMEX Malware in Campaign Targeting Ukraine and NATO Allies

The Russian threat actor known as APT28 (aka Forest Blizzard and Pawn Storm) has been linked to a fresh spear-phishing campaign targeting Ukraine and its allies to deploy a previously undocumented malware suite codenamed PRISMEX. “PRISMEX combines advanced steganography, component object model

Shrinking the IAM Attack Surface through Identity Visibility and Intelligence Platforms (IVIP)

The Fragmented State of Modern Enterprise Identity Enterprise IAM is approaching a breaking point. As organizations scale, identity becomes increasingly fragmented across thousands of applications, decentralized teams, machine identities, and autonomous systems.  The result is Identity Dark Matter: identity activity that sits outside

Anthropic’s Claude Mythos Finds Thousands of Zero-Day Flaws Across Major Systems

Artificial Intelligence (AI) company Anthropic announced a new cybersecurity initiative called Project Glasswing that will use a preview version of its new frontier model, Claude Mythos, to find and address security vulnerabilities. The model will be used by a small set of organizations, including Amazon Web Services, Apple,

N. Korean Hackers Spread 1,700 Malicious Packages Across npm, PyPI, Go, Rust

The North Korea-linked persistent campaign known as Contagious Interview has spread its tentacles by publishing malicious packages targeting the Go, Rust, and PHP ecosystems. “The threat actor’s packages were designed to impersonate legitimate developer tooling […], while quietly functioning as malware loaders,