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The Computer Emergency Response Team of Ukraine (CERT-UA) has disclosed details of a new phishing campaign in which the cybersecurity agency itself was impersonated to distribute a remote administration tool known as AGEWHEEZE. As part of the attacks, the threat actors, tracked as UAC-0255 , sent emails on March 26 and 27, 2026, posing as CERT-UA to distribute a password-protected ZIP archive hosted on Files.fm and urged recipients to install the "specialized software." The targets of the campaign included state organizations, medical centers, security companies, educational institutions, financial institutions, and software development companies. Some of the emails were sent from the email address "incidents@cert-ua[.]tech." The ZIP file ("CERT_UA_protection_tool.zip") is designed to download malware packaged as security software from the agency. The malware, per CERT-UA, is a remote access trojan codenamed AGEWHEEZE.  A Go-based malware, AGEWHEEZE...

A multi-pronged phishing campaign is targeting Spanish-speaking users in organizations across Latin America and Europe to deliver Windows banking trojans like Casbaneiro (aka Metamorfo) via another malware called Horabot . The activity has been attributed to a Brazilian cybercrime threat actor tracked as Augmented Marauder and Water Saci . The e-crime group was first documented by Trend Micro in October 2025. "This threat group employs a wider-ranging attack model focused on a bespoke delivery and propagation mechanism that includes WhatsApp, ClickFix techniques, and email-centric phishing," BlueVoyant security researchers Thomas Elkins and Joshua Green said in a technical breakdown published Tuesday. "It is now evident that while these Brazil-based operators heavily leverage script-based WhatsApp automation to compromise retail and consumer users in Latin America, they concurrently maintain and deploy an advanced, email-hijacking engine to penetrate enterprise ...

Proofpoint has disclosed details of a targeted email campaign in which threat actors with ties to Russia are leveraging the recently disclosed DarkSword exploit kit to target iOS devices. The activity has been attributed with high confidence to the Russian state-sponsored threat group known as TA446 , which is also tracked by the broader cybersecurity community under the monikers Callisto, COLDRIVER, and Star Blizzard (formerly SEABORGIUM). It's assessed to be affiliated with Russia's Federal Security Service (FSB). The hacking group is known for spear-phishing campaigns aimed at harvesting credentials from targets of interest. However, attacks mounted by the threat actor over the past year have targeted victims' WhatsApp accounts, as well as leveraged various custom malware families to steal sensitive data. The latest activity, highlighted by Proofpoint and Malfors , involves using fake "discussion invitation" emails spoofing the Atlantic Council to faci...

Cybersecurity researchers are calling attention to an active device code phishing campaign that's targeting Microsoft 365 identities across more than 340 organizations in the U.S., Canada, Australia, New Zealand, and Germany. The activity, per Huntress, was first spotted on February 19, 2026, with subsequent cases appearing at an accelerated pace since then. Notably, the campaign leverages Cloudflare Workers redirects with captured sessions redirected to infrastructure hosted on a platform-as-a-service (PaaS) offering called Railway, effectively turning it into a credential harvesting engine. Construction, non-profits, real estate, manufacturing, financial services, healthcare, legal, and government are some of the prominent sectors targeted as part of the campaign.  "What also makes this campaign unusual is not just the device code phishing techniques involved, but the variety of techniques observed," the company said. "Construction bid lures, landing page code...

Microsoft has warned of fresh campaigns that are capitalizing on the upcoming tax season in the U.S. to harvest credentials and deliver malware. The email campaigns take advantage of the urgency and time-sensitive nature of emails to send phishing messages masquerading as refund notices, payroll forms, filing reminders, and requests from tax professionals to deceive recipients into opening malicious attachments, scanning QR code, or interacting with suspicious links. "Many campaigns target individuals for personal and financial data theft, but others specifically target accountants and other professionals who handle sensitive documents, have access to financial data, and are accustomed to receiving tax-related emails during this period," the Microsoft Threat Intelligence and Microsoft Defender Security Research teams said in a report published last week. While some of these efforts direct users to sketchy pages designed through Phishing-as-a-service (PhaaS) platforms, ot...

The most dangerous phishing campaigns aren’t just designed to fool employees. Many are designed to exhaust the analysts investigating them. When a phishing investigation takes 12 hours instead of five minutes, the outcome can shift from a contained incident to a breach. For years, the cybersecurity industry has focused on the front door of phishing defense: employee training, email gateways that filter known threats, and reporting programs that encourage users to flag suspicious messages. Far less attention has been paid to what happens after a report is filed, and how attackers exploit the investigation process that follows.  Alert fatigue in Security Operations Centers isn't just an operational inconvenience . It can become an attack surface. SOC teams increasingly report phishing campaigns that appear designed not only to compromise targets but also to overwhelm the analysts responsible for investigating them.  This shifts how organizations should think about phishing d...

Tycoon 2FA , one of the prominent phishing-as-a-service (PhaaS) toolkits that allowed cybercriminals to stage adversary-in-the-middle (AitM) credential harvesting attacks at scale, was dismantled by a coalition of law enforcement agencies and security companies. The subscription-based phishing kit , which first emerged in August 2023 , was described by Europol as one of the largest phishing operations worldwide. The kit was sold via Telegram and Signal for a starting price of $120 for 10 days or $350 for access to a web-based administration panel for a month. Tycoon 2FA's primary developer is alleged to be Saad Fridi , who is said to be based in Pakistan. The panel serves as a hub for configuring, tracking, and refining campaigns. It features pre‑built templates, attachment files for common lure formats, domain and hosting configuration, redirect logic, and victim tracking. Operators can also configure how the malicious content is delivered through attachments, as well as kee...

Cybersecurity researchers have discovered a malicious Google Chrome extension that's designed to steal data associated with Meta Business Suite and Facebook Business Manager. The extension, named CL Suite by @CLMasters (ID: jkphinfhmfkckkcnifhjiplhfoiefffl), is marketed as a way to scrape Meta Business Suite data, remove verification pop-ups, and generate two-factor authentication (2FA) codes. The extension has 33 users as of writing. It was first uploaded to the Chrome Web Store on March 1, 2025. However, the browser add-on also exfiltrates TOTP codes for Facebook and Meta Business accounts, Business Manager contact lists, and analytics data to infrastructure controlled by the threat actor, Socket said. "The extension requests broad access to meta.com and facebook.com and claims in its privacy policy that 2FA secrets and Business Manager data remain local," security researcher Kirill Boychenko said . "In practice, the code transmits TOTP seeds and current one-t...

Cybersecurity researchers have discovered what they said is the first known malicious Microsoft Outlook add-in detected in the wild. In this unusual supply chain attack detailed by Koi Security, an unknown attacker claimed the domain associated with a now-abandoned legitimate add-in to serve a fake Microsoft login page, stealing over 4,000 credentials in the process. The activity has been codenamed AgreeToSteal by the cybersecurity company. The Outlook add-in in question is AgreeTo , which is advertised by its developer as a way for users to connect different calendars in a single place and share their availability through email. The add-in was last updated in December 2022. Idan Dardikman, co-founder and CTO of Koi, told The Hacker News that the incident represents a broadening of supply chain attack vectors. "This is the same class of attack we've seen in browser extensions, npm packages, and IDE plugins: a trusted distribution channel where the content can change aft...

SmarterTools confirmed last week that the Warlock (aka Storm-2603) ransomware gang breached its network by exploiting an unpatched SmarterMail instance. The incident took place on January 29, 2026, when a mail server that was not updated to the latest version was compromised, the company's Chief Commercial Officer, Derek Curtis, said. "Prior to the breach, we had approximately 30 servers/VMs with SmarterMail installed throughout our network," Curtis explained . "Unfortunately, we were unaware of one VM, set up by an employee, that was not being updated. As a result, that mail server was compromised, which led to the breach." However, SmarterTools emphasized that the breach did not affect its website, shopping cart, My Account portal, and several other services, and that no business applications or account data were affected or compromised. About 12 Windows servers on the company's office network, as well as a secondary data center used for quality cont...

SmarterTools has addressed two more security flaws in SmarterMail email software, including one critical security flaw that could result in arbitrary code execution. The vulnerability, tracked as CVE-2026-24423 , carries a CVSS score of 9.3 out of 10.0. "SmarterTools SmarterMail versions prior to build 9511 contain an unauthenticated remote code execution vulnerability in the ConnectToHub API method," according to a description of the flaw in CVE.org. "The attacker could point the SmarterMail to the malicious HTTP server, which serves the malicious OS [operating system] command. This command will be executed by the vulnerable application." watchTowr researchers Sina Kheirkhah and Piotr Bazydlo, CODE WHITE GmbH's Markus Wulftange , and VulnCheck's Cale Black have been credited with discovering and reporting the vulnerability. The security hole has been addressed in version Build 9511, released on January 15, 2026. The same build also patches another ...

Cybersecurity researchers have disclosed details of a new dual-vector campaign that leverages stolen credentials to deploy legitimate Remote Monitoring and Management (RMM) software for persistent remote access to compromised hosts. "Instead of deploying custom viruses, attackers are bypassing security perimeters by weaponizing the necessary IT tools that administrators trust," KnowBe4 Threat Labs researchers Jeewan Singh Jalal, Prabhakaran Ravichandhiran, and Anand Bodke said . "By stealing a 'skeleton key' to the system, they turn legitimate Remote Monitoring and Management (RMM) software into a persistent backdoor." The attack unfolds in two distinct waves, where the threat actors leverage fake invitation notifications to steal victim credentials, and then leverage those pilfered credentials to deploy RMM tools to establish persistent access. The bogus emails are disguised as an invitation from a legitimate platform called Greenvelope, and aim to tri...

Security teams at agile, fast-growing companies often have the same mandate: secure the business without slowing it down. Most teams inherit a tech stack optimized for breakneck growth, not resilience. In these environments, the security team is the helpdesk, the compliance expert, and the incident response team all rolled into one. Securing the cloud office in this scenario is all about finding leverage: identifying the strategic control points that drive the most resilience without adding operational overhead. Google Workspace provides an excellent security foundation, but its native tooling has inherent limitations, and relying on the default configurations can cause headaches. To build a truly resilient program, there are some common-sense first steps teams can take to secure Workspace natively, before intelligently augmenting the platform where its capabilities fall short. Secure email, the primary attack vector and largest archive Email remains the most reliable target for ...

A new security flaw in SmarterTools SmarterMail email software has come under active exploitation in the wild, two days after the release of a patch. The vulnerability, which currently does not have a CVE identifier, is tracked by watchTowr Labs as WT-2026-0001 . It was patched by SmarterTools on January 15, 2026, with Build 9511 , following responsible disclosure by the exposure management platform on January 8, 2026. Markus Wulftange of CODE WHITE GmbH, the finder has also been credited with reporting the same flaw. It has been described as an authentication bypass flaw that could allow any user to reset the SmarterMail system administrator password by means of a specially crafted HTTP request to the "/api/v1/auth/force-reset-password" endpoint. "The kicker of course being that said user is able to use RCE-as-a-feature functions to directly execute OS [operating system] commands," watchTowr Labs researchers Piotr Bazydlo and Sina Kheirkhah said. The problem ...

LastPass is alerting users to a new active phishing campaign that's impersonating the password management service, which aims to trick users into giving up their master passwords. The campaign, which began on or around January 19, 2026, involves sending phishing emails claiming upcoming maintenance and urging them to create a local backup of their password vaults in the next 24 hours. The messages, LastPass said, come with the following subject lines - LastPass Infrastructure Update: Secure Your Vault Now Your Data, Your Protection: Create a Backup Before Maintenance Don't Miss Out: Backup Your Vault Before Maintenance Important: LastPass Maintenance & Your Vault Security Protect Your Passwords: Backup Your Vault (24-Hour Window) The emails are designed to steer unsuspecting users to a phishing site ("group-content-gen2.s3.eu-west-3.amazonaws[.]com/5yaVgx51ZzGf") that then redirects to the domain " mail-lastpass[.]com ." The company emphasiz...

Cisco on Thursday released security updates for a maximum-severity security flaw impacting Cisco AsyncOS Software for Cisco Secure Email Gateway and Cisco Secure Email and Web Manager, nearly a month after the company disclosed that it had been exploited as a zero-day by a China-nexus advanced persistent threat (APT) actor codenamed UAT-9686. The vulnerability, tracked as CVE-2025-20393 (CVSS score: 10.0), is a remote command execution flaw arising as a result of insufficient validation of HTTP requests by the Spam Quarantine feature. Successful exploitation of the defect could permit an attacker to execute arbitrary commands with root privileges on the underlying operating system of an affected appliance. However, for the attack to work, three conditions must be met - The appliance is running a vulnerable release of Cisco AsyncOS Software The appliance is configured with the Spam Quarantine feature The Spam Quarantine feature is exposed to and reachable from the internet L...

The Iranian threat actor known as MuddyWater has been attributed to a spear-phishing campaign targeting diplomatic, maritime, financial, and telecom entities in the Middle East with a Rust-based implant codenamed RustyWater . "The campaign uses icon spoofing and malicious Word documents to deliver Rust based implants capable of asynchronous C2, anti-analysis, registry persistence, and modular post-compromise capability expansion," CloudSEK resetter Prajwal Awasthi said in a report published this week. The latest development reflects continued evolution of MuddyWater's tradecraft, which has gradually-but-steadily reduced its reliance on legitimate remote access software as a post-exploitation tool in favor of a diverse custom malware arsenal comprising tools like Phoenix, UDPGangster , BugSleep (aka MuddyRot), and MuddyViper . Also tracked as Mango Sandstorm, Static Kitten, and TA450, the hacking group is assessed to be affiliated with Iran's Ministry of Intelli...

Russian state-sponsored threat actors have been linked to a fresh set of credential harvesting attacks targeting individuals associated with a Turkish energy and nuclear research agency, as well as staff affiliated with a European think tank and organizations in North Macedonia and Uzbekistan. The activity has been attributed to APT28 (aka BlueDelta), which was tied to a "sustained" credential-harvesting campaign targeting users of UKR[.]net last month. APT28 is associated with the Main Directorate of the General Staff of the Armed Forces of the Russian Federation (GRU). "The use of Turkish-language and regionally targeted lure material suggests that BlueDelta tailored its content to increase credibility among specific professional and geographic audiences," Recorded Future's Insikt Group said . "These selections reflect a continued interest in organizations connected to energy research, defense cooperation, and government communication networks relevan...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday said it's retiring 10 emergency directives (Eds) that were issued between 2019 and 2024. The list of the directives now considered closed is as follows - ED 19-01: Mitigate DNS Infrastructure Tampering ED 20-02: Mitigate Windows Vulnerabilities from January 2020 Patch Tuesday ED 20-03: Mitigate Windows DNS Server Vulnerability from July 2020 Patch Tuesday   ED 20-04: Mitigate Netlogon Elevation of Privilege Vulnerability from August 2020 Patch Tuesday ED 21-01: Mitigate SolarWinds Orion Code Compromise ED 21-02: Mitigate Microsoft Exchange On-Premises Product Vulnerabilities ED 21-03: Mitigate Pulse Connect Secure Product Vulnerabilities   ED 21-04: Mitigate Windows Print Spooler Service Vulnerability   ED 22-03: Mitigate VMware Vulnerabilities ED 24-02: Mitigating the Significant Risk from Nation-State Compromise of Microsoft Corporate Email System   Stating that these directives were iss...

The U.S. Federal Bureau of Investigation (FBI) on Thursday released an advisory warning of North Korean state-sponsored threat actors leveraging malicious QR codes in spear-phishing campaigns targeting entities in the country. "As of 2025, Kimsuky actors have targeted think tanks, academic institutions, and both U.S. and foreign government entities with embedded malicious Quick Response (QR) codes in spear-phishing campaigns," the FBI said in the flash alert. "This type of spear-phishing attack is referred to as quishing." The use of QR codes for phishing is a tactic that forces victims to shift from a machine that's secured by enterprise policies to a mobile device that may not offer the same level of protection, effectively allowing threat actors to bypass traditional defenses. Kimsuky, also tracked as APT43, Black Banshee, Emerald Sleet, Springtail, TA427, and Velvet Chollima, is a threat group that's assessed to be affiliated with North Korea's...