Welcome to this week’s roundup of critical cybersecurity developments! From international law enforcement takedowns to escalating geopolitical cyber tensions, the period of May 23 to May 30, 2025, delivered a flurry of impactful stories. Dive into the key events shaping the digital security landscape, including ransomware disruptions, nation-state accusations, and vulnerabilities in software and devices. Here’s what you need to know to stay informed and secure.

Operation Endgame Dismantles Malware Infrastructure

Law enforcement agencies from Europe and North America launched Operation Endgame, a bold, coordinated strike against the infrastructure fueling major ransomware attacks. Reported across May 26 to 28, 2025, this yearslong effort targeted malware families like Lumma Stealer, seizing servers, domains, and other critical components. Europol, the FBI, and others collaborated to disrupt the tools enabling cybercrime, dealing a blow to ransomware campaigns worldwide. Posts on X and CyberScoopNews praised the operation’s impact, though experts warn cybercriminals may adapt, rebuilding or shifting tactics. Stay vigilant—update defenses, monitor systems, and support global efforts to combat these evolving threats.

China and Taiwan Trade Cyberattack Accusations

Tensions flared on May 27, 2025, as Chinese authorities accused Taiwan of attacking a technology company, alleging data theft and system disruption. Taiwan fired back, claiming China’s long history of hacking, theft, and cognitive warfare aimed to destabilize its infrastructure and society. Reuters noted Taiwan’s concerns about China’s intent to sow division, a hallmark of cyber operations. With no independent verification, attribution remains murky, but this exchange highlights the need for robust defenses and international cyber norms. As geopolitical rivalries intensify, organizations and governments must prioritize security to navigate this complex digital battlefield.

ConnectWise Confirms Cyberattack

On May 28, 2025, ConnectWise, maker of ScreenConnect remote access software, disclosed a cyberattack, likely by a sophisticated nation-state actor, impacting a small number of customers. Reported by The Hacker News on May 30, the breach is under investigation by Google Mandiant, with a possible link to CVE-2025-3935 (CVSS score: 8.1), a flaw patched in April 2025. This vulnerability allowed ViewState code injection, addressed in version 25.2.4. ConnectWise bolstered monitoring and hardening measures in response. This incident underscores the urgency of timely patching and proactive security, especially for software providers and their clients in the supply chain.

Thousands of ASUS Routers Hijacked

A stealthy backdoor campaign compromised thousands of ASUS routers, targeting homes and small businesses, as revealed on May 29, 2025. Attackers exploited vulnerabilities to gain persistent access, likely to harvest data or enable further attacks. Widely used globally, ASUS routers are prime targets, exposing the fragility of IoT devices. Cybersecurity experts urge users to update firmware, change default credentials, and watch for odd activity. This breach fuels concerns about connected device security, calling for stronger manufacturer standards and user education to protect networks from similar threats.

Lack of Coordination Exposes Telecom Networks

Between May 25 and 27, 2025, CyberScoop reported poor coordination between federal agencies and the telecom industry left networks open to a Chinese hacking group, likely Salt Typhoon. This lapse allowed exploitation of critical infrastructure vital for communication and security. The group’s tactics suggest state-sponsored espionage, aiming for data theft or disruption. Improved collaboration, real-time threat sharing, and standardized protocols are essential to bolster defenses. This incident highlights systemic weaknesses, driving calls for policy reforms and public-private partnerships to safeguard telecom networks against advanced threats.

Stay Ahead of Cyber Threats

This week’s events reveal the dynamic nature of cybersecurity—takedowns like Operation Endgame show progress, while attacks on routers, software, and telecom networks expose vulnerabilities. Geopolitical cyber conflicts add complexity, demanding vigilance, updates, and cooperation. Protect yourself: patch systems, monitor activity, and stay informed. Follow our blog for the latest insights, tips, and updates to keep your digital world secure!

Published on May 30, 2025, at 10:16 AM EDT