Attacks

Cisco released security advisories to address vulnerabilities affecting Cisco NX-OS Software. A cyber threat actor could exploit one of these vulnerabilities to cause a denial-of-service condition. CISA encourages users and administrators to review the following advisories and apply the necessary updates: Cisco NX-OS Software MPLS Encapsulated IPv6 Denial of Service Vulnerability Cisco NX-OS Software External Border Gateway Protocol Denial of Service Vulnerability      

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Today, CISA and the following partners released joint Cybersecurity Advisory Threat Actors Exploit Multiple Vulnerabilities in Ivanti Connect Secure and Policy Secure Gateways:  Federal Bureau of Investigation (FBI)  Multi-State Information Sharing & Analysis Center (MS-ISAC)  Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC)  United Kingdom National Cyber Security Centre (NCSC-UK)  Canadian Centre for Cyber Security (Cyber Centre), a part of the Communications Security Establishment  New Zealand National Cyber Security Centre (NCSC-NZ)  CERT-New Zealand (CERT…

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Today, CISA, the Federal Bureau of Investigation (FBI), and the Multi-State Information Sharing and Analysis Center (MS-ISAC) released a joint Cybersecurity Advisory (CSA), #StopRansomware: Phobos Ransomware, to disseminate known tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs), which are from incident response investigations tied to Phobos ransomware activity from as recently as February, 2024. Structured as a ransomware as a service (RaaS) model, Phobos ransomware actors have targeted entities including municipal and county…

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Today, CISA released a Resource Guide for Cybersecurity Clinics to outline ways CISA can partner with and support cybersecurity clinics and their clients. University cybersecurity clinics train students from diverse backgrounds and academic expertise to strengthen the digital defenses of non-profits, hospitals, municipalities, small businesses, and other under-resourced organizations. They can help address the national cyber workforce gap by developing a talent pipeline for cyber civil defense and helping students see themselves in a cybersecurity…

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Today, CISA, the Federal Bureau of Investigation (FBI), and the Department of Health and Human Services (HHS) released an update to the joint advisory #StopRansomware: ALPHV Blackcat to provide new indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs) associated with the ALPHV Blackcat ransomware as a service (RaaS). ALPHV Blackcat affiliates have been observed primarily targeting the healthcare sector. CISA, the FBI, and HHS urge network defenders to review the updated joint advisory…

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CISA, in partnership with UK National Cyber Security Centre (NCSC) and other U.S. and international partners released the joint advisory, SVR Cyber Actors Adapt Tactics for Initial Cloud Access. This advisory provides recent tactics, techniques, and procedures (TTPs) used by Russian Foreign Intelligence Service (SVR) cyber actors—also known as APT29, the Dukes, CozyBear, and NOBELIUM/Midnight Blizzard—to gain initial access into a cloud environment. The authoring agencies encourage network defenders and organizations review the joint advisory…

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Today, CISA, the Environmental Protection Agency (EPA), and the Federal Bureau of Investigation (FBI) updated the joint fact sheet Top Cyber Actions for Securing Water Systems. This update includes additional resources—from American Water Works Association, the WaterISAC, and MS-ISAC—to support water systems in defending against from malicious cyber activity.  The fact sheet outlines the following practical actions Water and Wastewater Systems (WWS) Sector entities can take to better protect water systems from malicious cyber activity…

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CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2024-1709 ConnectWise ScreenConnect Authentication Bypass Vulnerability CISA urges organizations to review the ConnectWise Security Bulletin and apply the necessary updates: ConnectWise ScreenConnect 23.9.8 security fix   These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the…

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Today, CISA, the Environmental Protection Agency (EPA), and the Federal Bureau of Investigation (FBI) released the joint fact sheet Top Cyber Actions for Securing Water Systems. This fact sheet outlines the following practical actions Water and Wastewater Systems (WWS) Sector entities can take to better protect water systems from malicious cyber activity and provides actionable guidance to implement concurrently: Reduce Exposure to the Public-Facing Internet Conduct Regular Cybersecurity Assessments Change Default Passwords Immediately Conduct an…

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Today, CISA and the Multi-State Information Sharing & Analysis Center (MS-ISAC) released a joint Cybersecurity Advisory (CSA), Threat Actor Leverages Compromised Account of Former Employee to Access State Government Organization to provide network defenders with the tactics, techniques, and procedures (TTPs) utilized by a threat actor and methods to protect against similar exploitation. Following an incident response assessment of a state government organization’s network environment, analysis confirmed compromise through network administrator credentials of a former employee.…

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