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The Chinese nation-state hacking group Salt Typhoon, despite facing US sanctions, continues to actively target telecommunications providers. Between December 2024 and January 2025, Recorded Future observed Salt Typhoon breaching five telecom firms, including a US-based affiliate of a UK telecom provider, a US internet service provider, and companies in Italy, South Africa, and Thailand. The group also performed reconnaissance on a Myanmar-based telecom provider.

Salt Typhoon exploited vulnerabilities in Cisco IOS XE software, specifically CVE-2023-20198 and CVE-2023-20273, to compromise unpatched Cisco devices. They attempted to compromise over 1,000 Cisco routers globally, focusing on those within telecom networks. Additionally, Salt Typhoon targeted universities, including the University of California and Utah Tech, potentially seeking access to research related to telecommunications and engineering.

ImgSrc: cyberscoop.com

References :

• cyberscoop.com: Salt Typhoon remains active, hits more telecom networks via Cisco routers
• The Register - Security: More victims of China's Salt Typhoon crew emerge: Telcos just now hit via Cisco bugs
• Carly Page: The China-backed Salt Typhoon group is still hacking telecommunications providers, despite government sanctions. Recorded Future says Salt Typhoon breached five firms between December and January, including a US affiliate of a prominent UK provider and a US-based ISP
• techcrunch.com: The China-backed Salt Typhoon group is still hacking telecommunications providers, despite government sanctions.
• www.wired.com: Wired's coverage of Salt Typhoon's ongoing hacking activities.
• Threats | CyberScoop: Salt Typhoon remains active, hits more telecom networks via Cisco routers
• cyberinsider.com: Chinese Hackers Breach Cisco Devices in Global Telecom Attacks
• securebulletin.com: RedMike (Salt Typhoon) continues global Telecom attacks
• CyberInsider: Chinese Hackers Breach Cisco Devices in Global Telecom Attacks
• Secure Bulletin: Report on RedMike's continued attacks on telecom providers.
• Talkback Resources: Salt Typhoon Targeting Old Cisco Vulnerabilities in Fresh Telecom Hacks [exp] [net]
• Talkback Resources: Chinese state-sponsored APT group Salt Typhoon targets telecommunications providers and universities by exploiting Cisco vulnerabilities, creating privileged accounts, bypassing firewalls, and exfiltrating data using GRE tunnels, prompting organizations to patch devices, enforce access controls, and monitor for unauthorized changes.
• Talkback Resources: Salt Typhoon Targeting Old Cisco Vulnerabilities in Fresh Telecom Hacks
• PCMag UK security: China's Salt Typhoon Spies Are Still Eavesdropping on Global Networks
• ciso2ciso.com: Salt Typhoon Targeting Old Cisco Vulnerabilities in Fresh Telecom Hacks
• ciso2ciso.com: Salt Typhoon Targeting Old Cisco Vulnerabilities in Fresh Telecom Hacks – Source: www.securityweek.com
• securityaffairs.com: China-linked APT Salt Typhoon breached telecoms by exploiting Cisco router flaws
• securityaffairs.com: China-linked APT Salt Typhoon breached telecoms by exploiting Cisco router flaws
• BleepingComputer: China's Salt Typhoon hackers are still actively targeting telecoms worldwide and have breached more U.S. telecommunications providers via unpatched Cisco IOS XE network devices.
• industrialcyber.co: Insikt Group details RedMike cyber espionage campaign on telecom providers using Cisco vulnerabilities
• securityonline.info: Cybersecurity researchers at Insikt Group have identified an ongoing cyber espionage campaign by RedMike (also tracked as Salt Typhoon).
• Industrial Cyber: Insikt Group details RedMike cyber espionage campaign on telecom providers using Cisco vulnerabilities
• SecureWorld News: Salt Typhoon Expands Espionage Campaign, Targets Cisco Routers
• Cisco Talos Blog: Weathering the storm: In the midst of a Typhoon
• cyberscoop.com: Cisco Talos observed the campaign targeting major U.S. telecommunication companies and observed the attackers primarily used legitimate login credentials to gain initial access, making detection and prevention difficult.
• cyberscoop.com: Salt Typhoon gained initial access to telecoms through Cisco devices
• securityaffairs.com: Salt Typhoon used custom malware JumbledPath to spy U.S. telecom providers

Classification:

• HashTags: #SaltTyhoon #CybersecurityThreats #TelecomAttacks
• Company: Cisco
• Target: Telecommunication Providers
• Attacker: Salt Typhoon
• Product: Cisco Routers
• Feature: Vulnerabilities in Cisco devic
• Type: Hack
• Severity: Major