All news in category “Incidents and Data Breaches”

🔒 The Health Service Executive (HSE) has offered €750 to individuals whose personal data was exposed in the May 2021 Conti ransomware attack, plus an additional €650 toward legal costs. The intrusion began with a malicious Microsoft Excel file that bypassed outdated anti‑malware defenses, forcing a full IT shutdown and widespread disruption to hospital services. A later PwC review criticised the HSE's unpatched systems and frail infrastructure, while the organisation says it has found no evidence of fraud stemming from the breach after more than four years.

🔐 Unit 42 identified 01flip, a new Rust‑based ransomware family observed in June 2025 that targets both Windows and Linux via Rust cross‑compilation. The malware enumerates writable directories, drops RECOVER-YOUR-FILE.TXT ransom notes, renames files with a .01flip extension, and encrypts victims with AES‑128‑CBC while protecting session keys with an embedded RSA‑2048 public key. Observed victims are a limited set in the Asia‑Pacific region, and an alleged data dump appeared on a dark‑web forum after at least one infection.

🔒 UpGuard's analysis found thousands of publicly accessible Streamlit applications exposing PII and confidential business data due to default public hosting and common misconfiguration. Using internet scans in October 2025, researchers identified nearly 15,000 IPs running Streamlit and more than ten thousand self-hosted apps reachable without authentication, while Community Cloud counts were substantially larger. The report warns that shadow AI—unsanctioned, persistent apps—can massively expand the attack surface and recommends inventory, access controls, authentication by default, and continuous monitoring.

🛡️ The Shai-Hulud 2.0 campaign is a widescale npm supply-chain compromise that injects malicious preinstall scripts to execute a bundled Bun runtime and harvest cloud credentials. Microsoft Defender observed attackers installing GitHub Actions runners named SHA1HULUD, using TruffleHog to locate secrets, and exfiltrating stolen credentials to public repositories. The guidance outlines detections, hunting queries, and prioritized mitigations for developers, maintainers, and cloud defenders.

🛡️ Threat actors tied to North Korea have been observed exploiting the critical React Server Components vulnerability (React2Shell, CVE-2025-55182) to deliver a new remote access trojan named EtherRAT. The implant downloads a Node.js runtime, decrypts and spawns a JavaScript payload, and resolves command-and-control via Ethereum smart contracts using a multi-endpoint consensus method. EtherRAT persists on Linux with five distinct mechanisms and supports self-updating obfuscated payloads, enabling long-term stealthy access and making remediation difficult.

🔐 Security researchers at Sysdig report new campaigns exploiting React2Shell (CVE-2025-55182), resulting in a novel implant that delivers EtherRAT and demonstrates advanced persistence and evasion. The exploit targets React v19 and many related frameworks, using a base64 shell command to fetch a downloader that installs Node.js, decrypts an obfuscated JavaScript dropper, and executes a blockchain-based C2-capable payload. Sysdig observed tooling overlaps with North Korea-associated campaigns, though firm attribution remains unconfirmed.

🔒 A 19-year-old suspect in Igualada, Barcelona, was arrested after authorities linked him to breaches at nine companies and the theft of 64 million private records. Police say the dataset included full names, home addresses, email addresses, phone numbers, DNI numbers and IBAN codes that the suspect attempted to sell on hacker forums using multiple accounts and pseudonyms. Officers seized computers and cryptocurrency wallets believed to hold proceeds from the sales; the investigation began in June. Separately, Ukrainian police arrested a 22-year-old who used custom malware and a 5,000-account bot farm to compromise and sell social media access.

🛡️ Researchers from Koi Security have uncovered two malicious Visual Studio Code extensions, Bitcoin Black and Codo AI, that delivered a DLL-based infostealer via a disguised Lightshot executable. The campaign used social engineering and evolving technical methods—initially complex PowerShell and passworded ZIPs, later streamlined to hidden batch scripts—to harvest screenshots, clipboard data, Wi‑Fi credentials and browser sessions. One extension posed as a theme while the other offered legitimate AI coding features, helping both evade suspicion on the VS Code Marketplace.

🔒 Evan Tangeman, 22, has pleaded guilty to laundering proceeds from a sophisticated criminal network that stole roughly US $263 million in cryptocurrency. Prosecutors say the Social Engineering Enterprise was organised via online gaming connections and used hackers, impersonating 'callers', burglars and money launderers to seize and convert victims' crypto. Tangeman admitted converting about US $3.5 million and faces sentencing on April 24, 2026.

⚠️ UpGuard's analysis of Streamlit-hosted applications uncovered thousands of publicly accessible data apps that expose sensitive business and personal information. In October 2025 scans identified 14,995 unique IPs running Streamlit; after accounting for instances with authentication or errors, over ten thousand apps remained accessible without login. The report documents exposed PII and business intelligence dashboards and recommends practical controls: maintain an inventory of user apps, move sensitive workloads off the Community Cloud, and enable authentication by default.

🔒 Cisco Talos detailed a campaign where a financially motivated actor deployed DeadLock ransomware using a Bring Your Own Vulnerable Driver (BYOVD) technique to disable endpoint protections by exploiting a Baidu driver flaw (CVE-2024-51324). A custom loader invoked the vulnerable driver to issue kernel-level commands that killed security processes; PowerShell scripts then escalated privileges, stopped backup and security services, and erased shadow copies. The C++ payload (compiled July 2025) injects into rundll32.exe, uses a custom stream cipher with time-based keys to append ".dlock" and waits roughly 50 seconds to evade sandboxes; communications and ransom negotiations occurred via Session. Organizations should enforce MFA, maintain strong endpoint controls and keep regular offline backups.

🔒 Researchers at Sysdig uncovered a new malware implant, EtherRAT, delivered via exploitation of the React2Shell deserialization flaw in Next.js just days after the vulnerability disclosure. The implant bundles a full Node.js runtime, uses an encrypted loader, and employs Ethereum smart contracts for resilient C2 while supporting five Linux persistence mechanisms. Operators can self-update the payload and execute arbitrary JavaScript, complicating detection and response.

🔐Storm-0249, an initial access broker, is abusing endpoint detection and response (EDR) components and trusted Windows utilities to execute malware stealthily. In one analyzed incident the actor used social engineering to run curl commands that installed a malicious MSI which drops a DLL placed beside the legitimate SentinelAgentWorker.exe, then performs DLL sideloading to run attacker code inside the signed EDR process. Additional payloads are piped into memory via PowerShell from a spoofed domain, avoiding disk-based detection. Researchers recommend behavior-based detection for trusted processes loading unsigned DLLs and stricter controls on curl, PowerShell, and living-off-the-land binaries.

🚨 ReliaQuest warns that Storm-0249 appears to be evolving from an initial access broker into an active operator, adopting domain spoofing, DLL side-loading and fileless PowerShell execution to facilitate ransomware intrusions. The actor used a Microsoft-mimicking URL and the Windows Run dialog to fetch and execute a PowerShell script that installed a trojanized SentinelOne DLL via a malicious MSI. This technique leverages living-off-the-land utilities and signed processes to maintain persistence and evade detection.

📧Attackers impersonating file-sharing and e-signature platforms sent over 40,000 finance-themed phishing emails, researchers at Check Point report. These messages mimicked notifications from services like SharePoint and popular e-signing vendors to coax recipients into clicking links or entering credentials. The campaign targeted finance workflows and aimed to harvest credentials or deliver follow-on malware, underscoring the need for robust email security and user vigilance.

🔒CISA, alongside the FBI, NSA, DOE, EPA, the Department of Defense Cyber Crime Center, and international partners, published a joint advisory describing opportunistic pro-Russia hacktivist activity targeting operational technology (OT) systems. These groups exploit minimally secured, internet-facing VNC connections to access OT control devices and have caused varying impacts, including physical damage. Named actors include Cyber Army of Russia Reborn, Z-Pentest, NoName057(16), and Sector16. The advisory recommends reducing internet exposure of OT assets, adopting mature asset-management and mapping practices, and enforcing robust authentication.

🛡️ Sophos links nearly 40 intrusions from Feb 2024 to Aug 2025 to STAC6565, a cluster assessed to overlap the criminal group Gold Blade (aka RedCurl/Red Wolf). The campaign shows an unusually narrow geographic focus — almost 80% of attacks targeted Canadian organizations — and combines targeted data theft with selective ransomware deployment using QWCrypt. Attack chains abuse recruitment platforms to deliver multi‑stage loaders such as RedLoader and tools designed to evade AV and disable recovery, often leveraging WebDAV, Cloudflare Workers and program‑compatibility execution paths.

🔒 Investigators from the Cybercrime Center Baden-Württemberg, the Baden-Württemberg State Criminal Police (LKA) and BaFin said they have shut down more than 3,500 phone numbers believed to be used by investment, grandchild and fake-police scammers. The affected landline, mobile and VoIP numbers were disabled by providers, and about 350 Austrian numbers were taken offline in coordination with Vienna. The measure is part of Operation Herakles, intended to dismantle the technical infrastructure of fraud networks and protect consumers.

🔒 Security researchers uncovered malicious extensions on the Microsoft Visual Studio Code Marketplace that delivered stealer malware while posing as a dark theme and an AI assistant. Koi Security reported the extensions downloaded additional payloads, captured screenshots, and siphoned emails, Slack messages, Wi‑Fi passwords, clipboard contents and browser sessions to attacker servers. Microsoft removed the packages in early December 2025 after investigators linked them to a publisher using multiple similarly named packages.

🛡️ Shanya is a packer-as-a-service used by multiple ransomware gangs to conceal payloads that disable endpoint detection and response (EDR) tools. The service returns a custom, encrypted wrapper that decrypts and decompresses the payload entirely in memory and inserts it into a memory-mapped copy of shell32.dll, avoiding disk artifacts. Sophos telemetry links Shanya-packed samples to Medusa, Qilin, Crytox and Akira, and notes techniques that crash user-mode debuggers and facilitate DLL side-loading to deploy EDR killers.