Month: June 2023

  • Medusa Ransomware: The Rise of a Double-Extortion Threat

    DEFENDEDGE

    In recent years, the cybercrime landscape has witnessed the emergence of Medusa ransomware, a variant that stands out due to its double-extortion tactics. This article aims to provide an in-depth profile of the Medusa ransomware operation, shedding light on its origins, operational methods, and the threats it poses to organizations. Additionally, we will explore measures… Read more

  • CISA, FBI, and MS-ISAC Update Joint CSA on Progress Telerik Vulnerabilities

    DEFENDEDGE

    Today, CISA, the Federal Bureau of Investigation (FBI), and Multi-State Information Sharing and Analysis Center (MS-ISAC) released an update for joint Cybersecurity Advisory (CSA) Threat Actors Exploit Progress Telerik Vulnerability in U.S. Government IIS Server.  This iteration of the CSA—now renamed Threat Actors Exploit Progress Telerik Vulnerabilities in Multiple U.S. Government IIS Servers—is based on… Read more

  • Barracuda Networks Releases Update to Address ESG Vulnerability

    DEFENDEDGE

    Barracuda Networks has released an update to their advisory addressing a vulnerability—CVE-2023-2868—in their Email Security Gateway Appliance (ESG). According to Barracuda, customers should replace impacted appliances immediately.  CISA urges organizations to review the Barracuda advisory and for all impacted customers to follow the mitigation steps as well as hunt for the listed indicators of compromise… Read more

  • Understanding Ransomware Threat Actors: LockBit

    DEFENDEDGE

    SUMMARY In 2022, LockBit was the most deployed ransomware variant across the world and continues to be prolific in 2023. Since January 2020, affiliates using LockBit have attacked organizations of varying sizes across an array of critical infrastructure sectors, including financial services, food and agriculture, education, energy, government and emergency services, healthcare, manufacturing, and transportation.… Read more

  • CISA and Partners Release Joint Advisory on Understanding Ransomware Threat Actors: LockBit

    DEFENDEDGE

    Today, CISA, the Federal Bureau of Investigation (FBI), the Multi-State Information Sharing and Analysis Center (MS-ISAC), and international partners released Understanding Ransomware Threat Actors: LockBit, a joint Cybersecurity Advisory (CSA) to help organizations understand and defend against threat actors using LockBit, the most globally used and prolific Ransomware-as-a-Service (RaaS) in 2022 and 2023. This guide… Read more

  • CISA Issues BOD 23-02: Mitigating the Risk from Internet-Exposed Management Interfaces

    DEFENDEDGE

    Today, CISA issued Binding Operational Directive (BOD) 23-02: Mitigating the Risk from Internet-Exposed Management Interfaces, requiring Federal Civilian Executive Branch (FCEB) agencies to reduce risks posed by internet-exposed networked management interfaces on federal information systems. This directive applies to dedicated device interfaces that are accessible over network protocols and are meant exclusively for authorized users… Read more

  • Fortinet Releases Security Updates for FortiOS and FortiProxy

    DEFENDEDGE

    Fortinet has released security updates to address a heap-based buffer overflow vulnerability CVE-2023-27997 in FortiOS and FortiProxy. An attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review Fortinet security advisory FG-IR-23-097 and apply the necessary updates. Read more

  • ALPHV Ransomware: A Closer Look into the Russian Ransomware Group

    DEFENDEDGE

    In recent years, the Russian-based ALPHV ransomware group, also known as BlackCat, Noberus, Gold Blazer, and Alpha Spider, has emerged as a formidable cyber threat, targeting organizations worldwide and operating with a ransomware-as-a-service (RaaS) business model. With their advanced tactics and persistent attacks, ALPHV has become a significant player in the ransomware landscape targeting over… Read more

  • CISA and FBI Release #StopRansomware: CL0P Ransomware Gang Exploits MOVEit Vulnerability

    DEFENDEDGE

    CISA and FBI released a joint Cybersecurity Advisory (CSA) [CL0P Ransomware Gang Exploits MOVEit Vulnerability] in response to a recent vulnerability exploitation attributed to CL0P Ransomware Gang. This [joint guide] provides indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs) identified through FBI investigations as recently as May this year. Additionally, it provides immediate actions to… Read more

  • #StopRansomware: CL0P Ransomware Gang Exploits CVE-2023-34362 MOVEit Vulnerability

    DEFENDEDGE

    SUMMARY Note: this joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors. These #StopRansomware advisories include recently and historically observed tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help organizations protect against ransomware. Visit stopransomware.gov… Read more