Threat Intelligence - RH-ISAC Blog

As the summer travel season approaches, travelers worldwide are busy booking their holidays, entrusting the hospitality industry with some of their most sensitive personal and financial information. Unfortunately, this makes the sector a prime target for threat actors looking to exploit and steal this data. In the 2025 Trustwave Risk Radar Report: Hospitality Sector report,…

Context Public reporting has emerged that claims ransomware group Scattered Spider gained initial access to Marks & Spencer’s (M&S) systems by compromising the login credentials of two employees from their third-party partner, Tata Consultancy Services (TCS). Cyber News reports that a source reportedly told news agencies “that at least two Tata Consultancy Services employees’ M&S logins were used…

Context Ivanti has disclosed a critical vulnerability, CVE-2025-22457 (CVSS 9.0), affecting multiple product lines including Connect Secure, Policy Secure, and ZTA Gateways. The flaw, a stack-based buffer overflow, allows unauthenticated remote attackers to execute arbitrary code, and has been actively exploited in the wild. Google’s Mandiant team identified threat activity tied to UNC5221, a China-nexus group, which…

Context Sekoia researchers have released updates on ClearFake, a malicious JavaScript framework that infects compromised websites to deliver malware through drive-by downloads and social engineering tactics. Initially observed in July 2023, ClearFake utilized fake browser update prompts to trick users into downloading malware. The latest 2025 variant introduces new lures, including fake reCAPTCHA and Cloudflare Turnstile verifications,…

Executive Summary Cybersecurity researchers at SecureList by Kaspersky have uncovered a sophisticated cyber espionage campaign by SideWinder, an Advanced Persistent Threat group targeting hospitality and consulting organizations, among others, across South and Southeast Asia, the Middle East, Europe, and Africa. The group relies on spear-phishing emails containing malicious documents that exploit CVE-2017-11882, a dated but effective Microsoft…