Daily Cybersecurity News Roundup – March 18, 2026

Stay updated with the latest cybersecurity news! This daily roundup covers escalating ransomware demands, critical CI/CD tool flaws, nation-state APT shifts, and emerging government-backed cyber defense programs to keep you informed and secure in the ever-evolving digital landscape.

1. RansomHub Demands $50 Million from Major U.S. University System

Published: 2026-03-17

RansomHub has publicly claimed responsibility for encrypting systems at a large public university network, exfiltrating research data and student records. The group posted samples on its leak site and set a 72-hour payment deadline.

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2. Critical Jenkins RCE Flaw Allows Full Server Takeover

Published: 2026-03-17

A newly disclosed unauthenticated remote code execution vulnerability in Jenkins (CVE-2026-42123) is being actively exploited in the wild. Security researchers report thousands of internet-exposed instances already compromised for cryptomining and data theft.

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3. Mandiant Exposes New Chinese APT “Periwinkle” Targeting Semiconductor Supply Chains

Published: 2026-03-18

Google’s Mandiant unit uncovered Periwinkle (UNC-5123), a previously unknown China-linked group using custom Go-based implants to steal intellectual property from chip manufacturers in Taiwan, South Korea, and the Netherlands.

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4. Europol Dismantles Banking Trojan Gang “ZeusReloaded” – 27 Arrests

Published: 2026-03-17

A joint Europol-FBI operation led to 27 arrests across Europe and the seizure of servers distributing an updated Zeus variant that bypasses modern MFA. Over €120 million in fraud losses were prevented.

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5. Microsoft Issues Emergency Patch for Teams Zero-Day Exploited in Government Attacks

Published: 2026-03-18

Microsoft rushed out a fix for a zero-day in Microsoft Teams that allowed remote code execution through crafted chat messages. The flaw was already used against U.S. and UK government agencies.

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6. Samsung Confirms Breach of 520,000 South Korean Customer Records

Published: 2026-03-17

Samsung Electronics disclosed unauthorized access to a third-party customer support database, exposing names, contact details, and partial payment information. The company is offering free credit monitoring.

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7. CISA Launches “Cyber Shield” National Vulnerability Prioritization Program

Published: 2026-03-18

CISA announced a new AI-assisted program to automatically rank and notify organizations of the most dangerous vulnerabilities based on real-world exploitation data. Pilot agencies report 40% faster patching times.

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8. New AI-Powered Phishing Campaign Uses Real-Time Voice Cloning Against Banks

Published: 2026-03-17

A sophisticated campaign is impersonating bank executives in real-time video calls using deepfake voices and faces cloned from public LinkedIn videos. At least three European banks have reported successful social-engineering transfers.

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Stay Vigilant

Cyber threats are evolving rapidly with ransomware groups raising the stakes, CI/CD platforms under heavy fire, and nation-state actors focusing on critical technology sectors. Subscribe to our newsletter for daily updates, prioritize patching internet-facing development tools immediately, enable strict MFA with hardware keys, and run regular deepfake detection drills for executive communications. Stay safe online!

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