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A new exploitation technique called Simple Mail Transfer Protocol ( SMTP ) smuggling can be weaponized by threat actors to send spoofed emails with fake sender addresses while bypassing security measures. "Threat actors could abuse vulnerable SMTP servers worldwide to send malicious emails from arbitrary email addresses, allowing targeted phishing attacks," Timo Longin, a senior security consultant at SEC Consult,  said  in an analysis published last month. SMTP is a TCP/IP protocol used to send and receive email messages over a network. To relay a message from an email client (aka mail user agent), an SMTP connection is established between the client and server in order to transmit the actual content of the email. The server then relies on what's called a mail transfer agent (MTA) to check the domain of the recipient's email address, and if it's different from that of the sender, it queries the domain name system (DNS) to look up the  MX (mail exchanger) rec...

Microsoft has released patches to fix 67 security flaws , including one zero-day bug in Web Distributed Authoring and Versioning (WebDAV) that it said has come under active exploitation in the wild. Of the 67 vulnerabilities, 11 are rated Critical and 56 are rated Important in severity. This includes 26 remote code execution flaws, 17 information disclosure flaws, and 14 privilege escalation flaws. The patches are in addition to 13 shortcomings addressed by the company in its Chromium-based Edge browser since the release of last month's Patch Tuesday update . The vulnerability that has been weaponized in real-world attacks concerns a remote code execution in WebDAV ( CVE-2025-33053 , CVSS score: 8.8) that can be triggered by deceiving users into clicking on a specially crafted URL. The tech giant credited Check Point researchers Alexandra Gofman and David Driker for discovering and reporting the bug. It's worth mentioning that CVE-2025-33053 is the first zero-day vulnerab...

Welcome to your weekly cybersecurity scoop! Ever thought about how the same AI meant to protect our hospitals could also compromise them? This week, we're breaking down the sophisticated world of AI-driven threats, key updates in regulations, and some urgent vulnerabilities in healthcare tech that need our attention. As we unpack these complex topics, we'll equip you with sharp insights to navigate these turbulent waters. Curious about the solutions? They're smarter and more unexpected than you might think. Let's dive in. ⚡ Threat of the Week Juniper Networks Routers Targeted by J-magic — A new campaign targeted enterprise-grade Juniper Networks routers between mid-2023 and mid-2024 to infect them with a backdoor dubbed J-magic when certain precise conditions. The malware is a variant of a nearly 25-year-old, publicly available backdoor referred to as cd00r, and is designed to establish a reverse shell to an attacker-controlled IP address and port. Semiconductor, energy, manuf...

OpenSSH maintainers have released security updates to contain a critical security flaw that could result in unauthenticated remote code execution with root privileges in glibc-based Linux systems. The vulnerability, codenamed regreSSHion, has been assigned the CVE identifier CVE-2024-6387. It resides in the OpenSSH server component , also known as sshd, which is designed to listen for connections from any of the client applications. "The vulnerability, which is a signal handler race condition in OpenSSH's server (sshd), allows unauthenticated remote code execution (RCE) as root on glibc-based Linux systems," Bharat Jogi, senior director of the threat research unit at Qualys, said in a disclosure published today. "This race condition affects sshd in its default configuration." The cybersecurity firm said it identified no less than 14 million potentially vulnerable OpenSSH server instances exposed to the internet, adding it's a regression of an already pa...

Microsoft has released patches to address a total of 143 security flaws as part of its monthly security updates, two of which have come under active exploitation in the wild. Five out of the 143 flaws are rated Critical, 136 are rated Important, and four are rated Moderate in severity. The fixes are in addition to 33 vulnerabilities that have been addressed in the Chromium-based Edge browser over the past month. The two security shortcomings that have come under exploitation are below - CVE-2024-38080 (CVSS score: 7.8) - Windows Hyper-V Elevation of Privilege Vulnerability CVE-2024-38112 (CVSS score: 7.5) - Windows MSHTML Platform Spoofing Vulnerability "Successful exploitation of this vulnerability requires an attacker to take additional actions prior to exploitation to prepare the target environment," Microsoft said of CVE-2024-38112. "An attacker would have to send the victim a malicious file that the victim would have to execute." Check Point securi...

It's easy to think your defenses are solid — until you realize attackers have been inside them the whole time. The latest incidents show that long-term, silent breaches are becoming the norm. The best defense now isn't just patching fast, but watching smarter and staying alert for what you don't expect. Here's a quick look at this week's top threats, new tactics, and security stories shaping the landscape. ⚡ Threat of the Week F5 Exposed to Nation-State Breach — F5 disclosed that unidentified threat actors broke into its systems and stole files containing some of BIG-IP's source code and information related to undisclosed vulnerabilities in the product. The company said it learned of the incident on August 9, 2025, although it's believed that the attackers were in its network for at least 12 months. The attackers are said to have used a malware family called BRICKSTORM, which is attributed to a China-nexus espionage group dubbed UNC5221. GreyNoise said it observed elevat...

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...

Criminals don't need to be clever all the time; they just follow the easiest path in: trick users, exploit stale components, or abuse trusted systems like OAuth and package registries. If your stack or habits make any of those easy, you're already a target. This week's ThreatsDay highlights show exactly how those weak points are being exploited — from overlooked misconfigurations to sophisticated new attack chains that turn ordinary tools into powerful entry points. Lumma Stealer Stumbles After Doxxing Drama Decline in Lumma Stealer Activity After Doxxing Campaign The activity of the Lumma Stealer (aka Water Kurita) information stealer has witnessed a "sudden drop" since last months after the identities of five alleged core group members were exposed as part of what's said to be an aggressive underground exposure campaign dubbed Lumma Rats since late August 2025. The targeted individuals are affiliated with the malware's development and administ...

Cybersecurity today is less about single attacks and more about chains of small weaknesses that connect into big risks. One overlooked update, one misused account, or one hidden tool in the wrong hands can be enough to open the door. The news this week shows how attackers are mixing methods—combining stolen access, unpatched software, and clever tricks to move from small entry points to large consequences.  For defenders, the lesson is clear: the real danger often comes not from one major flaw, but from how different small flaws interact together. ⚡ Threat of the Week WhatsApp Patches Actively Exploited Flaw — WhatsApp addressed a security vulnerability in its messaging apps for Apple iOS and macOS that it said may have been exploited in the wild in conjunction with a recently disclosed Apple flaw in targeted zero-day attacks. The vulnerability, CVE-2025-55177 relates to a case of insufficient authorization of linked device synchronization messages. The Meta-owned company ...