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Threat actors are continuing to upload malicious packages to the npm registry so as to tamper with already-installed local versions of legitimate libraries and execute malicious code in what's seen as a sneakier attempt to stage a software supply chain attack. The newly discovered package, named pdf-to-office , masquerades as a utility for converting PDF files to Microsoft Word documents. But, in reality, it harbors features to inject malicious code into cryptocurrency wallet software associated with Atomic Wallet and Exodus. "Effectively, a victim who tried to send crypto funds to another crypto wallet would have the intended wallet destination address swapped out for one belonging to the malicious actor," ReversingLabs researcher Lucija Valentić said in a report shared with The Hacker News. The npm package in question was first published on March 24, 2025, and has received three updates since then but not before the previous versions were likely removed by the a...

The Computer Emergency Response Team of Ukraine (CERT-UA) has warned that more than 2,000 computers in the country have been infected by a strain of malware called DirtyMoe. The agency  attributed  the campaign to a threat actor it calls  UAC-0027 . DirtyMoe , active since at least 2016, is capable of carrying out cryptojacking and distributed denial-of-service (DDoS) attacks. In March 2022, cybersecurity firm Avast revealed the malware's ability to propagate in a worm-like fashion by taking advantage of known security flaws. The DDoS botnet is known to be delivered by means of another malware referred to as  Purple Fox  or via bogus MSI installer packages for popular software such as Telegram. Purple Fox is also  equipped with a rootkit  that allows the threat actors to  hide the malware  on the machine and make it difficult to detect and remove. The exact initial access vector used in the campaign targeting Ukraine is currently unknow...

Cybersecurity researchers have disclosed details of an intrusion that involved the use of a CloudZ remote access tool (RAT) and a previous undocumented plugin dubbed Pheno with the aim of facilitating credential theft. "According to the functionalities of the CloudZ RAT and Pheno plugin, this was with the intention of stealing victims' credentials and potentially one-time passwords (OTPs)," Cisco Talos researchers Alex Karkins and Chetan Raghuprasad said in a Tuesday analysis. What makes the attack novel is that CloudZ uses the custom Pheno plugin to hijack the established PC-to-phone bridge by abusing the Microsoft Phone Link application, permitting the plugin to monitor for active Phone Link processes and potentially intercept sensitive mobile data like SMS and one-time passwords (OTPs) without the need for deploying malware on the phone.  The findings demonstrate how legitimate cross-device syncing features can expose unintended attack pathways to credential theft...

The threat actor known as TA558 has been attributed to a fresh set of attacks delivering various remote access trojans (RATs) like Venom RAT to breach hotels in Brazil and Spanish-speaking markets. Russian cybersecurity vendor Kaspersky is tracking the activity, observed in summer 2025, to a cluster it tracks as RevengeHotels. "The threat actors continue to employ phishing emails with invoice themes to deliver Venom RAT implants via JavaScript loaders and PowerShell downloaders," the company said . "A significant portion of the initial infector and downloader code in this campaign appears to be generated by large language model (LLM) agents." The findings demonstrate a new trend among cybercriminal groups to leverage artificial intelligence (AI) to bolster their tradecraft. Known to be active since at least 2015, RevengeHotels has a history of hospitality, hotel, and travel organizations in Latin America with the goal of installing malware on compromised syste...

The cyber world never hits pause, and staying alert matters more than ever. Every week brings new tricks, smarter attacks, and fresh lessons from the field. This recap cuts through the noise to share what really matters—key trends, warning signs, and stories shaping today’s security landscape. Whether you’re defending systems or just keeping up, these highlights help you spot what’s coming before it lands on your screen. ⚡ Threat of the Week Oracle 0-Day Under Attack — Threat actors with ties to the Cl0p ransomware group have exploited a zero-day flaw in E-Business Suite to facilitate data theft attacks. The vulnerability, tracked as CVE-2025-61882 (CVSS score: 9.8), concerns an unspecified bug that could allow an unauthenticated attacker with network access via HTTP to compromise and take control of the Oracle Concurrent Processing component. In a post shared on LinkedIn, Charles Carmakal, CTO of Mandiant at Google Cloud, said "Cl0p exploited multiple vulnerabilities in Ora...

1 Introduction This article provides a technical analysis of how many Windows kernel mode drivers can be interacted with from user mode without the hardware they were developed for. This work was motivated by driver-oriented vulnerability research and the need to evaluate the exploitability of individual findings, which frequently affect code whose reachability is hardware-gated. The methodology presented here should help anyone determine whether a particular Windows kernel mode driver vulnerability remains reachable - and thus potentially exploitable - even in the absence of the hardware the driver was developed for. The reader is expected to have basic Windows driver knowledge, especially regarding device objects. The rest of this article is written with the assumption that the reader is already familiar with the concepts described in the introduction article: Anatomy of Access: Windows Device Objects from a Security Perspective . Just like the introduction article, this resou...

Welcome to this week’s Threatsday Bulletin —your Thursday check-in on the latest twists and turns in cybersecurity and hacking. The digital threat landscape never stands still. One week it’s a critical zero-day, the next it’s a wave of phishing lures or a state-backed disinformation push. Each headline is a reminder that the rules keep changing and that defenders—whether you’re protecting a global enterprise or your own personal data—need to keep moving just as fast. In this edition we unpack fresh exploits, high-profile arrests, and the newest tactics cybercriminals are testing right now. Grab a coffee, take five minutes, and get the key insights that help you stay a step ahead of the next breach. Firmware fights back SonicWall Releases SMA 100 Firmware Update to Remove Rootkit SonicWall has released a firmware update that it said will help customers remove rootkit malware deployed in attacks targeting SMA 100 series devices. "S...

From sophisticated nation-state campaigns to stealthy malware lurking in unexpected places, this week’s cybersecurity landscape is a reminder that attackers are always evolving. Advanced threat groups are exploiting outdated hardware, abusing legitimate tools for financial fraud, and finding new ways to bypass security defenses. Meanwhile, supply chain threats are on the rise, with open-source repositories becoming a playground for credential theft and hidden backdoors. But it’s not all bad news—law enforcement is tightening its grip on cybercriminal networks, with key ransomware figures facing extradition and the security community making strides in uncovering and dismantling active threats. Ethical hackers continue to expose critical flaws, and new decryptors offer a fighting chance against ransomware operators. In this week’s recap, we dive into the latest attack techniques, emerging vulnerabilities, and defensive strategies to keep you ahead of the curve. Stay informed, stay sec...

Unknown malware presents a significant cybersecurity threat and can cause serious damage to organizations and individuals alike. When left undetected, malicious code can gain access to confidential information, corrupt data, and allow attackers to gain control of systems. Find out how to avoid these circumstances and detect unknown malicious behavior efficiently.  Challenges of new threats' detection While known malware families are more predictable and can be detected more easily, unknown threats can take on a variety of forms, causing a bunch of challenges for their detection: Malware developers use polymorphism, which enables them to modify the malicious code to generate unique variants of the same malware.  There is malware that is still not identified and doesn't have any rulesets for detection. Some threats can be Fully UnDetectable (FUD) for some time and challenge perimeter security.  The code is often encrypted, making it difficult to detect by signature-...

Security, trust, and stability — once the pillars of our digital world — are now the tools attackers turn against us. From stolen accounts to fake job offers, cybercriminals keep finding new ways to exploit both system flaws and human behavior. Each new breach proves a harsh truth: in cybersecurity, feeling safe can be far more dangerous than being alert. Here’s how that false sense of security was broken again this week. ⚡ Threat of the Week Newly Patched Critical Microsoft WSUS Flaw Comes Under Attack — Microsoft released out-of-band security updates to patch a critical-severity Windows Server Update Service (WSUS) vulnerability that has since come under active exploitation in the wild. The vulnerability in question is CVE-2025-59287 (CVSS score: 9.8), a remote code execution flaw in WSUS that was originally fixed by the tech giant as part of its Patch Tuesday update published last week. According to Eye Security and Huntress, the security flaw is being weaponized to drop a .N...

Ever wonder what happens in the digital world every time you blink? Here's something wild - hackers launch about 2,200 attacks every single day, which means someone's trying to break into a system somewhere every 39 seconds. And get this - while we're all worried about regular hackers, there are now AI systems out there that can craft phishing emails so convincingly, that even cybersecurity experts have trouble spotting them. What's even crazier? Some of the latest malware is like a digital chameleon - it literally watches how you try to catch it and changes its behavior to slip right past your defenses. Pretty mind-bending stuff, right? This week's roundup is packed with eye-opening developments that'll make you see your laptop in a whole new light. ⚡ Threat of the Week T-Mobile Spots Hackers Trying to Break In: U.S. telecom service provider T-Mobile caught some suspicious activity on their network recently - basically, someone was trying to sneak into th...