Healthcare

Trust Chains Broken at Scale While ClickFix Becomes a Service This week, attackers stopped trying to kick down the front door and instead walked in through the trust chains that hold digital ecosystems together. North Korea's Sapphire Sleet compromised over 140 Mastra npm packages through a single typosquatted dependency, stealing cryptocurrency wallets and planting persistent backdoors on developer machines. The GlassWorm group trojanized Open VSX extensions with WebAssembly malware that uses the Solana blockchain as an unkillable command channel, while SmartApeSG hijacked the Okendo Reviews widget to serve malicious prompts on thousands of e-commerce sites. Even vendor integrations became a liability: the Klue breach exposed Recorded Future client data through a compromised OAuth token connecting a marketing tool to Salesforce. Deception also became an industrial product. The ErrTraffic framework now operates as full Malware-as-a-Service, using blockchain smart contracts to hide its infrastructure and compromised WordPress sites to serve fake error prompts that trick users into running malicious commands. Attackers weaponized trusted AI platforms too—one campaign abused claude.ai's shared chat feature to deliver MacSync infostealer on macOS, while the shai_hulululud npm package uses prompt injection to blind AI-powered security scanners. On the infrastructure side, the FortiBleed campaign cracked credentials for over 73,000 FortiGate firewalls with a 45-GPU cluster, handing attackers valid keys to government and defense networks worldwide. Defenders should immediately hunt for the easy-day-js dependency in their npm projects, reset credentials on any FortiGate firewall, enable Azure AD Graph Activity Logs to close a years-long reconnaissance visibility gap in Microsoft cloud environments, and audit OAuth tokens on all third-party vendor integrations.

2026-06-184 minCISAhigh

Two vulnerabilities in the Apollo Pharmacy Blood Glucose Monitoring System APG-01 BT allow an attacker within Bluetooth Low Energy (BLE) range to intercept sensitive health data in cleartext and perform a denial-of-service attack by monopolizing the device's connection slot. The vendor has not responded to coordination requests, meaning no official patch is currently available.

2026-06-186 minInfobloxhigh

Operation Endgame successfully disrupted the SocGholish (TA569) initial access framework, which relies on compromised WordPress sites and Traffic Distribution Systems (TDS) to deliver fake browser updates. The threat actor utilizes domain shadowing and a multi-stage JScript payload to establish footholds, primarily targeting corporate environments during standard work weeks to facilitate follow-on ransomware deployment.

2026-06-115 minArctic Wolfhigh

Arctic Wolf Labs observed an ongoing campaign exploiting CVE-2026-0257, a high-severity authentication bypass vulnerability in Palo Alto Networks GlobalProtect. Threat actors are forging authentication override cookies to establish unauthorized VPN sessions, followed by rapid internal network reconnaissance using Impacket tooling.

2026-06-095 minInfobloxmedium

Infoblox Threat Intel observed a massive surge in residential proxy usage within enterprise environments, with over 65% of customers querying proxy-related domains. These proxies, often installed non-consensually via free apps and IoT devices, allow threat actors to launder traffic, bypass IP reputation controls, and potentially probe internal networks.

2026-05-286 minMicrosoftcritical

The Gentlemen ransomware, operated by Storm-2697, is a Go-based encryptor that combines robust Curve25519/XChaCha20 encryption with aggressive lateral movement capabilities. It utilizes multiple redundant propagation methods (PsExec, WMI, scheduled tasks, services) to maximize network compromise while employing extensive defense evasion techniques to hinder detection and recovery.

2026-05-266 minANY.RUNhigh

In May 2026, ANY.RUN observed a surge in sophisticated phishing and malware campaigns utilizing fileless execution, browser-based credential theft, and legitimate workflow abuse. Key threats included Agent Tesla credential harvesting, ClickFix fileless malware, BlobPhish in-memory page generation, and phishing-to-RMM chains bypassing traditional MFA via real-time OTP interception.

2026-05-216 minHuntresshigh

Opportunistic threat actors continue to exploit exposed RDP, RDWeb, and vulnerable VPN configurations to gain initial access. Once inside, attackers deploy custom reverse tunnels, harvest credentials, and modify registry and firewall settings to establish persistent RDP access.

2026-05-196 minMicrosofthigh

Fox Tempest is a financially motivated threat actor providing malware-signing-as-a-service (MSaaS) to the cybercrime ecosystem. By abusing Microsoft Artifact Signing via stolen identities, they generate short-lived, fraudulent code-signing certificates that allow threat actors like Vanilla Tempest to bypass security controls and deploy payloads such as the Oyster backdoor and Rhysida ransomware.

2026-05-135 minCheck Pointhigh

In Q1 2026, the ransomware ecosystem experienced significant consolidation, with top groups like Qilin, Akira, The Gentlemen, and LockBit 5.0 dominating the landscape. Notably, The Gentlemen leveraged a massive stockpile of pre-exploited FortiGate devices (CVE-2024-55591) to rapidly scale operations, while LockBit 5.0 returned with multi-platform capabilities and a strategic shift away from US targets to evade law enforcement.

2026-05-134 minTrend Microhigh

In May 2026, threat actor SHADOW-AETHER-015 compromised Instructure's Canvas LMS backend, exposing sensitive data from 8,809 global educational institutions. The breach, likely facilitated via API exploitation or third-party integration compromise, exposed PII and private communications, creating significant risk for highly targeted follow-on spear-phishing and credential abuse campaigns.

2026-05-134 minRecorded Futurelow

This article provides a comprehensive overview of 14 common payment fraud tactics, including phishing, account takeover, and wire transfer fraud, highlighting the projected $362 billion in global losses by 2028. It emphasizes the need for organizations, particularly in e-commerce and finance, to implement layered defenses such as PCI compliance, 3D Secure authentication, and machine learning-based anomaly detection to mitigate financial and reputational damage.

2026-05-136 minANY.RUNhigh

A large-scale phishing campaign is targeting U.S. organizations across multiple sectors using fake event invitations. The campaign employs a repeatable infrastructure to bypass initial defenses via CAPTCHA, subsequently leading to either credential and OTP interception or the deployment of legitimate Remote Monitoring and Management (RMM) tools for persistent access.

2026-05-135 minMicrosofthigh

A large-scale Adversary-in-the-Middle (AiTM) phishing campaign targeted over 35,000 users using sophisticated 'code of conduct' lures. The attack chain leveraged legitimate email services, PDF attachments, and multiple CAPTCHA gates to evade detection, ultimately proxying Microsoft 365 authentication sessions to steal tokens and bypass standard MFA.

2026-05-136 minCisco Taloshigh

Talos IR's Q1 2026 trends report highlights the resurgence of phishing as the primary initial access vector, heavily targeting public administration and healthcare. The quarter saw novel abuses of AI tools like Softr for credential harvesting, the emergence of the Crimson Collective extortion group leveraging valid accounts and TruffleHog, and Rhysida ransomware deploying the MeowBackConn backdoor.

2026-05-134 minAkamaimedium

The U.S. Department of Health and Human Services (HHS) Notice of Proposed Rulemaking (NPRM) emphasizes that healthcare organizations must move beyond basic HIPAA compliance to achieve true cybersecurity resilience. To combat the rising threat of ransomware, organizations are urged to implement continuous asset monitoring and microsegmentation to contain lateral movement, reduce the blast radius of attacks, and protect electronic protected health information (ePHI).

2026-05-135 minRecorded Futurehigh

In 2025, the Latin America and the Caribbean (LAC) region faced escalating cybercriminal activity driven by rapid digital adoption and economic instability. Threat actors heavily utilized Telegram and dark web forums to distribute ransomware, banking trojans, and infostealers, increasingly targeting the healthcare, manufacturing, and government sectors while adapting to law enforcement disruptions.

2026-05-137 minTrend Microhigh

A targeted campaign is delivering the PureLog Stealer via localized copyright violation lures. The attack employs a sophisticated multi-stage infection chain, utilizing a Python-based loader to bypass AMSI, establish registry persistence, and execute the final .NET stealer entirely in memory to evade detection.