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Zyxel firewalls targeted in recent ransomware attacks

Security Affairs

Zyxel warns that a ransomware group has been observed exploiting a recently patched command injection issue in its firewalls. Zyxel warns that a ransomware gang has been observed exploiting a recently patched command injection vulnerability, tracked as CVE-2024-42057, in its firewalls for initial compromise.

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Columbus Ransomware Attack Exposes 500,000+ Residents’ Data: How to Stay Safe

eSecurity Planet

Following a July 18 attack by the Rhysida ransomware group — believed to have Russian affiliations — Columbus is still reeling from the exposure of vast amounts of sensitive resident data. Installing up-to-date firewalls , secure access controls, and intrusion detection systems is a must.

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Researchers Quietly Cracked Zeppelin Ransomware Keys

Krebs on Security

Peter is an IT manager for a technology manufacturer that got hit with a Russian ransomware strain called “ Zeppelin ” in May 2020. There are multiple examples of ransomware groups doing just that after security researchers crowed about finding vulnerabilities in their ransomware code. This is not an idle concern.

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U.S. CISA adds Fortinet FortiOS/FortiProxy and GitHub Action flaws to its Known Exploited Vulnerabilities catalog

Security Affairs

The vulnerability is an authentication bypass issue that could allow a remote attacker to gain super-admin privileges by making maliciously crafted CSF proxy requests. The vulnerability is an authentication bypass issue that could allow a remote attacker to gain super-admin privileges by making maliciously crafted CSF proxy requests.

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Threat Spotlight: Inside the World’s Fastest Rising Ransomware Operator — BlackLock

Digital Shadows

Key Findings First observed in March 2024, BlackLock (aka El Dorado or Eldorado) has rapidly emerged as a major player in the ransomware-as-a-service (RaaS) ecosystem. By Q4 2024, it ranked as the 7th most prolific ransomware group on data-leak sites, fueled by a staggering 1,425% increase in activity from Q3.

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American Water Shuts Down Services After Cybersecurity Breach

eSecurity Planet

While American Water has not disclosed the exact method of attack, such incidents often involve tactics like ransomware or phishing , where hackers gain access to sensitive systems and either steal or encrypt data, demanding a ransom in return for restoring access.

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Medusa ransomware hit over 300 critical infrastructure organizations until February 2025

Security Affairs

The Medusa ransomware operation hit over 300 organizations in critical infrastructure sectors in the United States until February 2025. The FBI, CISA, and MS-ISAC have issued a joint advisory detailing Medusa ransomware tactics, techniques, and indicators of compromise (IOCs) based on FBI investigations as recent as February 2025.