Cyber Security Alerts & Threat Intelligence

Systems Affected   Any system running Microsoft Windows (Windows 95 and newer) that are used for reading email or accessing peer-to-peer file sharing services.   Overview   A new variant of the previously discovered MyDoom virus, MyDoom.B, has been identified. In addition to the common traits of email-borne viruses, this virus may prevent your computer from updating anti-virus and other software.   Description     Quick LinksProtect | Identify | Recover Protect Your Systems To protect your systems from infection by this virus, we recommend that you take the following steps. In addition to these steps, US-CERT encourages home users…

Summary This report is a collaborative research effort by the cyber security authorities of five nations: Australia, Canada, New Zealand, the United Kingdom, and the United States.[1][2][3][4][5] In it we highlight the use of five publicly available tools, which have been used for malicious purposes in recent cyber incidents around the world. The five tools are: Remote Access Trojan: JBiFrost Webshell: China Chopper Credential Stealer: Mimikatz Lateral Movement Framework: PowerShell Empire C2 Obfuscation and Exfiltration: HUC Packet Transmitter To aid the work of network defenders and systems administrators, we also provide advice on limiting the effectiveness of these tools and…

Summary The Department of Homeland Security (DHS) National Cybersecurity and Communications Integration Center (NCCIC) and the Federal Bureau of Investigation (FBI) are issuing this activity alert to inform computer network defenders about SamSam ransomware, also known as MSIL/Samas.A. Specifically, this product shares analysis of vulnerabilities that cyber actors exploited to deploy this ransomware. In addition, this report provides recommendations for prevention and mitigation. The SamSam actors targeted multiple industries, including some within critical infrastructure. Victims were located predominately in the United States, but also internationally. Network-wide infections against organizations are far more likely to garner large ransom payments than infections…

Summary The National Cybersecurity and Communications Integration Center (NCCIC), part of the Cybersecurity and Infrastructure Security Agency (CISA), is aware of a global Domain Name System (DNS) infrastructure hijacking campaign. Using compromised credentials, an attacker can modify the location to which an organization’s domain name resources resolve. This enables the attacker to redirect user traffic to attacker-controlled infrastructure and obtain valid encryption certificates for an organization’s domain names, enabling man-in-the-middle attacks. See the following links for downloadable copies of open-source indicators of compromise (IOCs) from the sources listed in the References section below: IOCs (.csv) IOCs (.stix) Note: these files were last…

Summary The Cybersecurity and Infrastructure Security Agency (CISA) is issuing this activity alert in response to recently disclosed exploits that target unsecure configurations of SAP components. [1] Technical Details A presentation at the April 2019 Operation for Community Development and Empowerment (OPCDE) cybersecurity conference describes SAP systems with unsecure configurations exposed to the internet. Typically, SAP systems are not intended to be exposed to the internet as it is an untrusted network. Malicious cyber actors can attack and compromise these unsecure systems with publicly available exploit tools, termed “10KBLAZE.” The presentation details the new exploit tools and reports on systems…

Summary The Cybersecurity and Infrastructure Security Agency (CISA) is issuing this Activity Alert to provide information on a vulnerability, known as “BlueKeep,” that exists in the following Microsoft Windows Operating Systems (OSs), including both 32- and 64-bit versions, as well as all Service Pack versions: Windows 2000 Windows Vista Windows XP Windows 7 Windows Server 2003 Windows Server 2003 R2 Windows Server 2008 Windows Server 2008 R2 An attacker can exploit this vulnerability to take control of an affected system.      Technical Details BlueKeep (CVE-2019-0708) exists within the Remote Desktop Protocol (RDP) used by the Microsoft Windows OSs listed…

Summary Note: This joint Cybersecurity Advisory is being published as an addition to the Cybersecurity and Infrastructure Security Agency (CISA) May 6, 2025, joint fact sheet Primary Mitigations to Reduce Cyber Threats to Operational Technology and European Cybercrime Centre’s (EC3) Operation Eastwood, in which CISA, Federal Bureau of Investigation (FBI), Department of Energy (DOE), Environmental Protection Agency (EPA), and EC3 shared information about cyber incidents affecting the operational technology (OT) and industrial control systems (ICS) of critical infrastructure entities in the United States and globally. FBI, CISA, National Security Agency (NSA), and the following partners—hereafter referred to as “the authoring…

High Vulnerabilities PrimaryVendor — Product Description Published CVSS Score Source Info Patch Info 10web–10Web Booster Website speed optimization, Cache & Page Speed optimizer The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to arbitrary folder deletion due to insufficient file path validation in the get_cache_dir_for_page_from_url() function in all versions up to, and including, 2.32.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary folders on the server, which can easily lead to a loss of data or a denial of service condition. 2025-12-06 9.6 CVE-2025-13377 https://www.wordfence.com/threat-intel/vulnerabilities/id/f8bcf51a-36ee-4d4d-b9d6-d9db0dafd791?source=cvehttps://plugins.trac.wordpress.org/changeset/3402434/tenweb-speed-optimizer …

The Cybersecurity and Infrastructure Security Agency (CISA) is aware of ongoing intrusions by People’s Republic of China (PRC) state-sponsored cyber actors using BRICKSTORM malware for long-term persistence on victim systems. BRICKSTORM is a sophisticated backdoor for VMware vSphere1,2 and Windows environments.3 Victim organizations are primarily in the Government Services and Facilities and Information Technology Sectors. BRICKSTORM enables cyber threat actors to maintain stealthy access and provides capabilities for initiation, persistence, and secure command and control. The malware employs advanced functionality, including multiple layers of encryption (e.g., HTTPS, WebSockets, and nested TLS), DNS-over-HTTPS (DoH) to conceal communications, and a SOCKS proxy…

CISA and the Australian Signals Directorate’s Australian Cyber Security Centre, in collaboration with federal and international partners, have released new cybersecurity guidance: Principles for the Secure Integration of Artificial Intelligence in Operational Technology. This guidance aims to help critical infrastructure owners and operators integrate artificial intelligence (AI) into operational technology (OT) systems securely, balancing the benefits of AI—such as increased efficiency, enhanced decision-making, and cost savings—with the unique risks it poses to the safety, security, and reliability of OT environments. The document focuses on machine learning (ML), large language models (LLMs), and AI agents due to their complex security challenges, but is…

High Vulnerabilities PrimaryVendor — Product Description Published CVSS Score Source Info Patch Info 0x4m4–HexStrike AI By providing a command-line argument starting with a semi-colon ; to an API endpoint created by the EnhancedCommandExecutor class of the HexStrike AI MCP server, the resultant composed command is executed directly in the context of the MCP server’s normal privilege; typically, this is root. There is no attempt to sanitize these arguments in the default configuration of this MCP server at the affected version (as of commit 2f3a5512 in September of 2025). 2025-11-30 9.1 CVE-2025-35028 https://takeonme.org/gcves/GCVE-1337-2025-00000000000000000000000000000000000000000000000000111111111111111111111111000000000000000000000000000000000000000000000000000000011  AMD–AMD Prof Improper return value within AMD uProf…

CISA is aware of multiple cyber threat actors actively leveraging commercial spyware to target users of mobile messaging applications (apps).1 These cyber actors use sophisticated targeting and social engineering techniques to deliver spyware and gain unauthorized access to a victim’s messaging app, facilitating the deployment of additional malicious payloads that can further compromise the victim’s mobile device.   These cyber actors use tactics such as: Phishing and malicious device-linking QR codes to compromise victim accounts and link them to actor-controlled devices. Zero-click exploits,2 which require no direct action from the device user. Impersonation3 of messaging app platforms, such as Signal…