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For decades, Microsoft Exchange has been the backbone of business communications, powering emailing, scheduling and collaboration for organizations worldwide. Whether deployed on-premises or in hybrid environments, companies of all sizes rely on Exchange for seamless internal and external communication, often integrating it deeply with their workflows, compliance policies and security frameworks. However, Microsoft has officially announced that support for Exchange Server 2016 and Exchange Server 2019 will end on October 14, 2025. While this may seem like a distant concern, businesses and IT teams must start preparing now. The end of support means that Microsoft will no longer provide security patches, bug fixes or technical support, leaving organizations running on these versions exposed to security vulnerabilities, compliance risks and potential operational disruptions. So, what should businesses do now? In this article, we'll explore the impact of Microsoft's decision, the risks...

Citrix has released security updates for a high-severity security flaw impacting NetScaler Console (formerly NetScaler ADM) and NetScaler Agent that could lead to privilege escalation under certain conditions. The vulnerability, tracked as CVE-2024-12284 , has been given a CVSS v4 score of 8.8 out of a maximum of 10.0. It has been described as a case of improper privilege management that could result in authenticated privilege escalation if the NetScaler Console Agent is deployed and allows an attacker to execute post-compromise actions. "The issue arises due to inadequate privilege management and could be exploited by an authenticated malicious actor to execute commands without additional authorization," Netscaler noted . "However, only authenticated users with existing access to the NetScaler Console can exploit this vulnerability, thereby limiting the threat surface to only authenticated users." The shortcoming affects the below versions - NetScaler Cons...

Microsoft has released security updates to address two Critical-rated flaws impacting Bing and Power Pages, including one that has come under active exploitation in the wild. The vulnerabilities are listed below - CVE-2025-21355 (CVSS score: 8.6) - Microsoft Bing Remote Code Execution Vulnerability CVE-2025-24989 (CVSS score: 8.2) - Microsoft Power Pages Elevation of Privilege Vulnerability "Missing Authentication for Critical Function in Microsoft Bing allows an unauthorized attacker to execute code over a network," the tech giant said in an advisory for CVE-2025-21355. No customer action is required. On the other hand, CVE-2025-24989 concerns a case of improper access control in Power Pages , a low-code platform for creating, hosting, and managing secure business websites, that an unauthorized attacker could exploit to elevate privileges over a network and bypass user registration control. Microsoft, which credited its own employee Raj Kumar for flagging the vul...

Multiple Russia-aligned threat actors have been observed targeting individuals of interest via the privacy-focused messaging app Signal to gain unauthorized access to their accounts. "The most novel and widely used technique underpinning Russian-aligned attempts to compromise Signal accounts is the abuse of the app's legitimate 'linked devices' feature that enables Signal to be used on multiple devices concurrently," the Google Threat Intelligence Group (GTIG) said in a report. In the attacks spotted by the tech giant's threat intelligence teams, the threat actors, including one it's tracking as UNC5792, have resorted to malicious QR codes that, when scanned, will link a victim's account to an actor-controlled Signal instance. As a result, future messages get delivered synchronously to both the victim and the threat actor in real-time, thereby granting threat actors a persistent way to eavesdrop on the victim's conversations. Google said UAC-...

A new variant of the Snake Keylogger malware is being used to actively target Windows users located in China, Turkey, Indonesia, Taiwan, and Spain. Fortinet FortiGuard Labs said the new version of the malware has been behind over 280 million blocked infection attempts worldwide since the start of the year. "Typically delivered through phishing emails containing malicious attachments or links, Snake Keylogger is designed to steal sensitive information from popular web browsers like Chrome, Edge, and Firefox by logging keystrokes, capturing credentials, and monitoring the clipboard," security researcher Kevin Su said . Its other features allow it to exfiltrate the stolen information to an attacker-controlled server using the Simple Mail Transfer Protocol (SMTP) and Telegram bots, allowing the threat actors to access stolen credentials and other sensitive data." What's notable about the latest set of attacks is that it makes use of the AutoIt scripting language ...

The growing demand for cybersecurity and compliance services presents a great opportunity for Managed Service Providers (MSPs) and Managed Security Service Providers (MSSPs) to offer virtual Chief Information Security Officer (vCISO) services—delivering high-level cybersecurity leadership without the cost of a full-time hire. However, transitioning to vCISO services is not without its challenges. Many service providers struggle with structuring, pricing, and selling these services effectively. That's why we created the Ultimate Guide to Structuring and Selling vCISO Services .  This guide, created in collaboration with Jesse Miller, a seasoned vCISO and founder of PowerPSA Consulting, offers actionable strategies to navigate these hurdles. From identifying what to offer and whom to target, to crafting compelling sales strategies, this resource provides a comprehensive roadmap for building a successful vCISO practice. Where to Begin: What to Offer and to Whom This guide outline...

Users who are on the lookout for popular games were lured into downloading trojanized installers that led to the deployment of a cryptocurrency miner on compromised Windows hosts. The large-scale activity has been codenamed StaryDobry by Russian cybersecurity company Kaspersky, which first detected it on December 31, 2024. It lasted for a month. Targets of the campaign include individuals and businesses worldwide, with Kaspersky's telemetry finding higher infection concentrations in Russia, Brazil, Germany, Belarus, and Kazakhstan. "This approach helped the threat actors make the most out of the miner implant by targeting powerful gaming machines capable of sustaining mining activity," researchers Tatyana Shishkova and Kirill Korchemny said in an analysis published Tuesday. The XMRig cryptocurrency miner campaign employs popular simulator and physics games like BeamNG.drive, Garry's Mod, Dyson Sphere Program, Universe Sandbox, and Plutocracy as lures to initi...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added two security flaws impacting Palo Alto Networks PAN-OS and SonicWall SonicOS SSLVPN to its Known Exploited Vulnerabilities ( KEV ) catalog, based on evidence of active exploitation. The flaws are listed below - CVE-2025-0108 (CVSS score: 7.8) - An authentication bypass vulnerability in the Palo Alto Networks PAN-OS management web interface that allows an unauthenticated attacker with network access to the management web interface to bypass the authentication normally required and invoke certain PHP scripts CVE-2024-53704 (CVSS score: 8.2) - An improper authentication vulnerability in the SSLVPN authentication mechanism that allows a remote attacker to bypass authentication Palo Alto Networks has since confirmed to The Hacker News that it has observed active exploitation attempts against CVE-2025-0108, with the company noting that it could be chained with other vulnerabilities like CVE-2024-9474...

Two security vulnerabilities have been discovered in the OpenSSH secure networking utility suite that, if successfully exploited, could result in an active machine-in-the-middle (MitM) and a denial-of-service (DoS) attack, respectively, under certain conditions. The vulnerabilities, detailed by the Qualys Threat Research Unit (TRU), are listed below - CVE-2025-26465 (CVSS score: 6.8)  - The OpenSSH client contains a logic error between versions 6.8p1 to 9.9p1 (inclusive) that makes it vulnerable to an active MitM attack if the VerifyHostKeyDNS option is enabled, allowing a malicious interloper to impersonate a legitimate server when a client attempts to connect to it (Introduced in December 2014) CVE-2025-26466 (CVSS score: 5.9) - The OpenSSH client and server are vulnerable to a pre-authentication DoS attack between versions 9.5p1 to 9.9p1 (inclusive) that causes memory and CPU consumption (Introduced in August 2023) "If an attacker can perform a man-in-the-middle a...

The Chinese state-sponsored threat actor known as Mustang Panda has been observed employing a novel technique to evade detection and maintain control over infected systems. This involves the use of a legitimate Microsoft Windows utility called Microsoft Application Virtualization Injector (MAVInject.exe) to inject the threat actor's malicious payload into an external process, waitfor.exe, whenever ESET antivirus application is detected running, Trend Micro said in a new analysis. "The attack involves dropping multiple files, including legitimate executables and malicious components, and deploying a decoy PDF to distract the victim," security researchers Nathaniel Morales and Nick Dai noted. "Additionally, Earth Preta utilizes Setup Factory, an installer builder for Windows software, to drop and execute the payload; this enables them to evade detection and maintain persistence in compromised systems." The starting point of the attack sequence is an execu...

Cybersecurity researchers are alerting to a new campaign that leverages web injects to deliver a new Apple macOS malware known as FrigidStealer . The activity has been attributed to a previously undocumented threat actor known as TA2727, with the information stealers for other platforms such as Windows ( Lumma Stealer or DeerStealer ) and Android ( Marcher ). TA2727 is a "threat actor that uses fake update themed lures to distribute a variety of malware payloads," the Proofpoint Threat Research Team said in a report shared with The Hacker News.  It's one of the newly identified threat activity clusters alongside TA2726, which is assessed to be a malicious traffic distribution system (TDS) operator that facilitates traffic distribution for other threat actors to deliver malware. The financially motivated threat actor is believed to be active since at least September 2022. TA2726, per the enterprise security firm, acts as a TDS for TA2727 and another threat actor ca...