Star Blizzard is a Russian espionage group linked to the Federal Security Service Centre 18, targeting government, defense, NGOs, and academia mainly in the UK, US, Ukraine, and NATO countries. The group uses spear-phishing, impersonation, and relationship building to steal credentials and conduct hack-and-leak operations. Since 2024, they have expanded to deploying endpoint malware including SPICA, YESROBOT, MAYBEROBOT, and CosmicPulse backdoors. Their tactics evolved from targeted to bulk phishing campaigns using fake CAPTCHA lures and exploiting iOS devices with the DarkSword exploit kit. They also use compromised WordPress sites for infrastructure and rapidly develop new malware variants after exposure. Recent campaigns have targeted over 100 organizations with the RedFlick delivery chain, showing increased scale and sophistication.
Between April and July 2026, AOMEI Backupper, a Windows backup and disk cloning software, was compromised multiple times in short-lived supply chain attack windows. During these brief periods, users received a downloader for the ShinyRoad modular backdoor framework. The attacker, tracked as UNC7017, tampered with update server configurations to redirect users to malicious payloads, including the CrossRoad dropper, a modified Radmin Server with a malicious DLL, and the Adaptix C2 framework. The campaign used ephemeral tampering windows lasting only five to ten minutes, reverting quickly to authentic versions, which complicated detection. The attack affected a broad range of users opportunistically, with some higher education, IT services, and telecommunications organizations in multiple countries identified as compromised. AOMEI initially dismissed reports of tampering but later took corrective actions after repeated notifications.
Between April and July 2026, attackers compromised AOMEI's update servers to distribute malware via brief modifications to configuration files used by AOMEI Backupper's built-in promotional and notification features. The attackers altered two configuration files to redirect software updates to malicious payloads, delivering a downloader named CROSSROAD and a backdoor called SHINYROAD. These changes were short-lived, lasting only minutes, making detection difficult. The malware established persistence and enabled remote control of infected systems. Additionally, a technique to steal Windows authentication hashes was observed during one attack window. Affected organizations spanned multiple countries and sectors. AOMEI has since upgraded its servers, patched vulnerabilities, and taken corrective actions, though details on the initial breach vector remain undisclosed.
A suspected Chinese-speaking threat actor linked to Red Heron conducted extensive exploitation campaigns from May to September 2026. The attacker exploited multiple vulnerabilities in WordPress (CVE-2026-63030, CVE-2026-60137) to breach a western government organization, stealing over 18,000 sensitive records including credentials and personally identifiable information. Additionally, the actor exploited CVE-2026-7273 in ZyXEL GS1900 switches, compromising 996 devices across 48 countries and exfiltrating configurations and credentials. The adversary demonstrated sophisticated capabilities such as custom tool development possibly using large language models, privilege escalation, and systematic data exfiltration via PowerShell-based techniques.
VectraRAT is a previously undocumented Malware-as-a-Service platform active since August 2022. It consists of a Go-based control server (VectraHub) and a native C++ Windows implant. The malware offers capabilities including hidden desktop control, keylogging, clipboard hijacking with cryptocurrency address replacement, browser credential theft, and a UAC bypass that elevates privileges without user prompts. It is distributed via Amadey loader and ClickFix campaigns using tax-themed lures. Victims include corporate Windows users, including Windows Server 2025, across multiple countries such as the United States, Russia, and Germany. Infrastructure analysis revealed exposed operational panels and directories across various hosting providers.
Switzerland's federal IT office says hackers exploited vulnerabilities to breach its Microsoft SharePoint servers and compromised approximately 200 accounts. [...]
A misconfigured Python HTTP server on a Budapest VPS exposed the complete operational infrastructure of three distinct phishing operators. The investigation uncovered codemado, an Egyptian threat actor operating since 2018, running a full AiTM platform with custom tools including MaDoO Blaster; saroula01, deploying OAuth Device Code Flow attacks that accumulated 218 victims across 12 countries over a year; and mail-argenta, a Nigerian operator identified through infostealer logs containing his own credentials. All three actors leveraged customized Evilginx forks and AI-assisted development to build MFA-bypass infrastructure from public GitHub repositories. The campaigns targeted Microsoft 365 accounts primarily, with codemado maintaining ties to RockyBelling's "The Quarry" cybercrime ecosystem. The exposed server contained phishing configurations, credential logs, RMM installers, combolists, and Telegram session files, revealing sustained operations from at least January 2025 through May 2026.
Threat actors exploited the EtherHiding technique to store ClearFake payload routing instructions within smart contracts on the BNB Smart Chain testnet, creating an immutable command-and-control infrastructure that cannot be taken down. The attack began with injected JavaScript on a compromised Swiss website that queried blockchain contracts to deliver malicious payloads. Victims passing anti-analysis checks were fingerprinted by operating system and routed to platform-specific ClickFix social engineering overlays. The campaign simultaneously deployed SectopRAT, a .NET-based remote access trojan capable of browser session hijacking, and ACRStealer, a C++ infostealer targeting credentials and cryptocurrency wallets. An on-chain execution tracker confirmed each compromise in real time. Four smart contracts shared a single deployer wallet, with the oldest deployed nearly a year before analysis, indicating a long-running, actively maintained operation.
Google researchers have shown that breaking the encryption of Bitcoin and Ethereum requires 20x fewer qubits. The post Google Slashes Quantum Resource Requirements for Breaking Cryptocurrency Encryption appeared first on SecurityWeek .
This is the fourth update to the TeamPCP supply chain campaign threat intelligence report,&#;x26;#;xc2;&#;x26;#;xa0;"When the Security Scanner Became the Weapon"&#;x26;#;xc2;&#;x26;#;xa0;(v3.0, March 25, 2026). Update 003 covered developments through March 28, including the first 48-hour pause in new compromises and the campaign&#;x26;#;39;s shift to monetization. This update consolidates intelligence from March 28-30, 2026 -- two days since our last update.
Threat actors are exploiting tax season with numerous campaigns leveraging tax themes to deliver malware, remote monitoring tools, fraud attempts, and credential phishing. Over a hundred campaigns have been observed in 2026, with a notable increase in remote monitoring and management (RMM) payloads. Tactics include impersonating tax agencies, claiming expired documents, and requesting tax filing support. While primarily targeting the United States, campaigns have also been observed in Canada, Australia, Switzerland, and Japan. Notable actors include TA4922, a newly designated threat group delivering malware from the Winos4.0 ecosystem, and TA2730, focusing on credential phishing for financial institutions. Business email compromise actors are also using tax form lures to steal financial and personal data. These campaigns demonstrate the ongoing exploitation of timely and topical themes by cybercriminals to deceive users.
The Lapsus$ hackers allegedly compromised internal code repositories, credentials, and employee data. The post Extortion Group Claims It Hacked AstraZeneca appeared first on SecurityWeek .
The company says some of its internal business applications were accessed after an employee fell victim to a phishing attack. The post Robotic Surgery Giant Intuitive Discloses Cyberattack appeared first on SecurityWeek .
A new backdoor, dubbed A0Backdoor, has been discovered in connection with a campaign using email bombing and IT-support impersonation over Microsoft Teams to gain Quick Assist access. The malware's loader exhibits anti-sandbox evasion techniques, and the campaign's command-and-control has shifted to a covert DNS mail exchange-based channel. This activity is attributed to the threat group Blitz Brigantine, also known as Storm-1811 or STAC5777, and shows similarities to Black Basta-linked social-engineering tactics. The attackers use digitally signed MSI packages, often hosted on Microsoft cloud storage, to deliver their proprietary tooling. The A0Backdoor employs sophisticated techniques such as time-based execution windows, runtime decryption, and DNS tunneling for covert communication. The campaign has been active since August 2025, targeting primarily the finance and health sectors.
A newly announced quantum algorithm suggests that the practical decryption of RSA encryption using quantum computers could occur much sooner than previously anticipated. Traditionally, the threat to RSA and ECC encryption from quantum computing was linked to Shor’s algorithm, which requires million-qubit quantum computers, a technology not expected in the near term. This new development challenges that assumption, indicating that the quantum breaking point for widely used public key cryptography may be closer. Although no known exploits exist in the wild yet, this advancement raises significant concerns for the security of current cryptographic systems. Organizations relying on RSA and ECC for confidentiality and integrity should begin preparing for a post-quantum cryptographic transition. The threat impacts global communications, financial transactions, and data protection mechanisms. Immediate mitigation involves accelerating the adoption of quantum-resistant algorithms and increasing cryptographic agility. Countries with advanced technological infrastructure and heavy reliance on RSA/ECC encryption are at higher risk. The overall severity is assessed as high due to the potential widespread impact and the fundamental nature of the cryptographic break, despite the current lack of active exploitation.
This analysis details how threat actors are exploiting Windows File Explorer's WebDAV functionality to deliver malware. WebDAV, a legacy protocol, is being used to trick users into downloading malicious files without going through web browsers, potentially bypassing security controls. Campaigns often use complex chains of scripts and legitimate files to deliver Remote Access Trojans (RATs). The tactic has been observed since February 2024, with increased activity from September 2024. Threat actors frequently abuse Cloudflare Tunnel demo accounts to host WebDAV servers. The report explains WebDAV links, how File Explorer can be manipulated, and various methods used by attackers, including URL shortcut files and LNK files. It also highlights the prevalence of German and English language campaigns targeting European corporate email accounts.
UFP Technologies, a medical device manufacturer, suffered a ransomware attack involving both data theft and file-encrypting malware. This incident highlights the growing risk to healthcare-related supply chains where sensitive data and operational continuity are critical. The attack likely disrupted business operations and exposed confidential information, though no specific exploited vulnerabilities or attack vectors have been disclosed. There is no indication of known exploits in the wild or publicly available indicators of compromise. Organizations in the medical device and healthcare sectors should be vigilant about ransomware threats targeting their supply chains. Mitigation should focus on robust backup strategies, network segmentation, and enhanced monitoring for unusual activity. Countries with significant medical device manufacturing and healthcare infrastructure are at higher risk. Given the combination of data theft and encryption without publicly known exploits, the severity is assessed as medium. Defenders must prioritize incident response readiness and supply chain security to reduce impact from similar attacks.
While this campaign targets crypto wallets and steals money, the methodology has far wider potential that could be used by other attackers. The post Autonomous AI Agents Provide New Class of Supply Chain Attack appeared first on SecurityWeek .
The Ministry of Economy reported discovering unauthorized access to the national bank account registry FICOBA. The post French Government Says 1.2 Million Bank Accounts Exposed in Breach appeared first on SecurityWeek .
