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Brazilian users have emerged as the target of a new self-propagating malware dubbed SORVEPOTEL that spreads via the popular messaging app WhatsApp. The campaign, codenamed Water Saci by Trend Micro, weaponizes the trust with the platform to extend its reach across Windows systems, adding the attack is "engineered for speed and propagation" rather than data theft or ransomware. "SORVEPOTEL has been observed to spread across Windows systems through convincing phishing messages with malicious ZIP file attachments," researchers Jeffrey Francis Bonaobra, Maristel Policarpio, Sophia Nilette Robles, Cj Arsley Mateo, Jacob Santos, and Paul John Bardon said . "Interestingly, the phishing message that contains the malicious file attachment requires users to open it on a desktop, suggesting that threat actors might be more interested in targeting enterprises rather than consumers." Once the attachment is opened, the malware automatically propagates via the deskt...

A "dangerous piece of functionality" has been discovered in Microsoft 365 suite that could be potentially abused by a malicious actor to mount attacks on cloud infrastructure and ransom files stored on SharePoint and OneDrive. The cloud ransomware attack makes it possible to launch file-encrypting malware to "encrypt files stored on SharePoint and OneDrive in a way that makes them unrecoverable without dedicated backups or a decryption key from the attacker," Proofpoint  said  in a report published today. The infection sequence can be carried out using a combination of Microsoft APIs, command-line interface (CLI) scripts, and PowerShell scripts, the enterprise security firm added. The attack, at its core, hinges on a Microsoft 365 feature called AutoSave that creates copies of older file versions as and when users make edits to a file stored on OneDrive or SharePoint Online. It commences with gaining unauthorized access to a target user's SharePoint Online...

Cybersecurity researchers have disclosed details of a new Rust-based backdoor called ChaosBot that can allow operators to conduct reconnaissance and execute arbitrary commands on compromised hosts. "Threat actors leveraged compromised credentials that mapped to both Cisco VPN and an over-privileged Active Directory account named, 'serviceaccount,'" eSentire said in a technical report published last week. "Using the compromised account, they leveraged WMI to execute remote commands across systems in the network, facilitating the deployment and execution of ChaosBot." The Canadian cybersecurity company said it first detected the malware in late September 2025 within a financial services customer's environment. ChaosBot is noteworthy for its abuse of Discord for command-and-control (C2). It gets its name from a Discord profile maintained by the threat actor behind it, who goes by the online moniker "chaos_00019" and is responsible for issuin...

This week's cyber stories show how fast the online world can turn risky. Hackers are sneaking malware into movie downloads, browser add-ons, and even software updates people trust. Tech giants and governments are racing to plug new holes while arguing over privacy and control. And researchers keep uncovering just how much of our digital life is still wide open. The new Threatsday Bulletin brings it all together—big hacks, quiet exploits, bold arrests, and smart discoveries that explain where cyber threats are headed next. It's your quick, plain-spoken look at the week's biggest security moves before they become tomorrow's headlines. Maritime IoT under siege Mirai-Based Broadside Botnet Exploits TBK DVR Flaw A new Mirai botnet variant dubbed Broadside has been exploiting a critical-severity vulnerability in TBK DVR ( CVE-2024-3721 ) in attacks targeting the maritime logistics sector. "Unlike previous Mirai variants, Broadside e...

From unpatched cars to hijacked clouds, this week's Threatsday headlines remind us of one thing — no corner of technology is safe. Attackers are scanning firewalls for critical flaws, bending vulnerable SQL servers into powerful command centers, and even finding ways to poison Chrome's settings to sneak in malicious extensions. On the defense side, AI is stepping up to block ransomware in real time, but privacy fights over data access and surveillance are heating up just as fast. It's a week that shows how wide the battlefield has become — from the apps on our phones to the cars we drive. Don't keep this knowledge to yourself: share this bulletin to protect others, and add The Hacker News to your Google News list so you never miss the updates that could make the difference. Claude Now Finds Your Bugs Anthropic Touts Safety Protections Built Into Claude Sonnet 4.6 Anthropic said it has rolled out a number of safety and security improve...

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...

If you use a smartphone, browse the web, or unzip files on your computer, you are in the crosshairs this week. Hackers are currently exploiting critical flaws in the daily software we all rely on—and in some cases, they started attacking before a fix was even ready. Below, we list the urgent updates you need to install right now to stop these active threats. ⚡ Threat of the Week Apple and Google Release Fixes for Actively Exploited Flaws — Apple released security updates for iOS, iPadOS, macOS, tvOS, watchOS, visionOS, and Safari web browser to address two zero-days that the company said have been exploited in highly targeted attacks. CVE-2025-14174 has been described as a memory corruption issue, while the second, CVE-2025-43529, is a use-after-free bug. They can both be exploited using maliciously crafted web content to execute arbitrary code. CVE-2025-14174 was also addressed by Google in its Chrome browser since it resides in its open-source Almost Native Graphics Layer Engi...

Cybersecurity researchers have charted the evolution of XWorm malware, turning it into a versatile tool for supporting a wide range of malicious actions on compromised hosts. "XWorm's modular design is built around a core client and an array of specialized components known as plugins," Trellix researchers Niranjan Hegde and Sijo Jacob said in an analysis published last week. "These plugins are essentially additional payloads designed to carry out specific harmful actions once the core malware is active." XWorm, first observed in 2022 and linked to a threat actor named EvilCoder, is a Swiss Army knife of malware that can facilitate data theft, keylogging, screen capture, persistence, and even ransomware operations. It's primarily propagated via phishing emails and bogus sites advertising malicious ScreenConnect installers. Some of the other tools advertised by the developer include a .NET-based malware builder, a remote access trojan called XBinder, a...

Everything feels secure—until one small thing slips through. Even strong systems can break if a simple check is missed or a trusted tool is misused. Most threats don't start with alarms—they sneak in through the little things we overlook. A tiny bug, a reused password, a quiet connection—that's all it takes. Staying safe isn't just about reacting fast. It's about catching these early signs before they blow up into real problems. That's why this week's updates matter. From stealthy tactics to unexpected entry points, the stories ahead reveal how quickly risk can spread—and what smart teams are doing to stay ahead. Dive in. ⚡ Threat of the Week U.S. Disrupts N. Korea IT Worker Scheme — Prosecutors said they uncovered the North Korean IT staff working at over 100 U.S. companies using fictitious or stolen identities and not only drawing salaries, but also stealing secret data and plundering virtual currency more than $900,000 in one incident targeting an unnamed blockchain company in ...

Cyber threats last week showed how attackers no longer need big hacks to cause big damage. They're going after the everyday tools we trust most — firewalls, browser add-ons, and even smart TVs — turning small cracks into serious breaches. The real danger now isn't just one major attack, but hundreds of quiet ones using the software and devices already inside our networks. Each trusted system can become an entry point if it's left unpatched or overlooked. Here's a clear look at the week's biggest risks, from exploited network flaws to new global campaigns and fast-moving vulnerabilities. ⚡ Threat of the Week Flaws in Multiple Network Security Products Come Under Attack — Over the past week, Fortinet , SonicWall , Cisco , and WatchGuard said vulnerabilities in their products have been exploited by threat actors in real-world attacks. Cisco said attacks exploiting CVE-2025-20393, a critical flaw in AsyncOS, have been abused by a China-nexus advanced persistent threat (APT) actor cod...

A spear-phishing email campaign has been observed targeting recruiters with a JavaScript backdoor called More_eggs, indicating persistent efforts to single out the sector under the guise of fake job applications. "A sophisticated spear-phishing lure tricked a recruitment officer into downloading and executing a malicious file disguised as a resume, leading to a more_eggs backdoor infection," Trend Micro researchers Ryan Soliven, Maria Emreen Viray, and Fe Cureg said in an analysis. More_eggs, sold as a malware-as-a-service (MaaS), is a malicious software that comes with capabilities to siphon credentials, including those related to online bank accounts, email accounts, and IT administrator accounts. It's attributed to a threat actor called the Golden Chickens group (aka Venom Spider), and has been put to use by several other e-crime groups like FIN6 (aka ITG08 ), Cobalt, and Evilnum. Earlier this June, eSentire disclosed details of a similar attack that leverages ...

This week, cyber attackers are moving quickly, and businesses need to stay alert. They're finding new weaknesses in popular software and coming up with clever ways to get around security. Even one unpatched flaw could let attackers in, leading to data theft or even taking control of your systems. The clock is ticking—if defenses aren't updated regularly, it could lead to serious damage. The message is clear: don't wait for an attack to happen. Take action now to protect your business. Here's a look at some of the biggest stories in cybersecurity this week: from new flaws in WinRAR and NVIDIA Triton to advanced attack techniques you should know about. Let's get into the details. ⚡ Threat of the Week Trend Micro Warns of Actively Exploited 0-Day — Trend Micro has released temporary mitigations to address critical security flaws in on-premise versions of Apex One Management Console that it said have been exploited in the wild. The vulnerabilities (CVE-2025-54948 and CVE-2025-54987),...

Every week, the cyber world reminds us that silence doesn't mean safety. Attacks often begin quietly — one unpatched flaw, one overlooked credential, one backup left unencrypted. By the time alarms sound, the damage is done. This week's edition looks at how attackers are changing the game — linking different flaws, working together across borders, and even turning trusted tools into weapons. From major software bugs to AI abuse and new phishing tricks, each story shows how fast the threat landscape is shifting and why security needs to move just as quickly. ⚡ Threat of the Week Dozens of Orgs Impacted by Exploitation of Oracle EBS Flaw — Dozens of organizations may have been impacted following the zero-day exploitation of a security flaw in Oracle's E-Business Suite (EBS) software since August 9, 2025, according to Google Threat Intelligence Group (GTIG) and Mandiant. The activity, which bears some hallmarks associated with the Cl0p ransomware crew, is assessed to have fashio...

Threat actors associated with the Cuba ransomware have been linked to previously undocumented tactics, techniques and procedures (TTPs), including a new remote access trojan called ROMCOM RAT on compromised systems. The  new findings  come from Palo Alto Networks' Unit 42 threat intelligence team, which is tracking the double extortion ransomware group under the  constellation-themed moniker   Tropical Scorpius . Cuba ransomware (aka  COLDDRAW ), which was first detected in December 2019, reemerged on the threat landscape in November 2021 and has been attributed to attacks against 60 entities in five critical infrastructure sectors, amassing at least $43.9 million in ransom payments. Of the 60 victims listed on its data leak site, 40 are located in the U.S., indicating a not as global distribution of targeted organizations as other ransomware gangs. "Cuba ransomware is distributed through Hancitor malware, a loader known for dropping or executing stealers,...

Hackers have been busy again this week. From fake voice calls and AI-powered malware to huge money-laundering busts and new scams, there's a lot happening in the cyber world. Criminals are getting creative — using smart tricks to steal data, sound real, and hide in plain sight. But they're not the only ones moving fast. Governments and security teams are fighting back, shutting down fake networks, banning risky projects, and tightening digital defenses. Here's a quick look at what's making waves this week — the biggest hacks, the new threats, and the wins worth knowing about. Mirai-based malware resurfaces with new IoT campaign ShadowV2 Botnet Continues to Target IoT Devices The threat actors behind the Mirai-based ShadowV2 botnet have been observed infecting IoT devices across industries and continents. The campaign is said to have been active only during the Amazon Web Services (AWS) outage in late October 2025. It's assessed ...

Think your Wi-Fi is safe? Your coding tools? Or even your favorite financial apps? This week proves again how hackers, companies, and governments are all locked in a nonstop race to outsmart each other. Here's a quick rundown of the latest cyber stories that show how fast the game keeps changing. DeFi exploit drains funds Critical yETH Exploit Used to Steal $9M A critical exploit targeting Yearn Finance's yETH pool on Ethereum has been exploited by unknown threat actors, resulting in the theft of approximately $9 million from the protocol. The attack is said to have abused a flaw in how the protocol manages its internal accounting, stemming from the fact that a cache containing calculated values to save on gas fees was never cleared when the pool was completely emptied. "The attacker achieved this by minting an astronomical number of tokens – 235 septillion yETH (a 41-digit number) – while depositing only 16 wei, worth approxim...