The attacks use diverse social engineering lures and rotating payloads to deliver ScreenConnect for persistent remote access to compromised networks.
Talos has collected prompt logs from threat actor endpoints running various applications, such as Claude Code, CodeX, Cursor, or Gemini. This blog is an analysis of the ways we've seen bad actors leveraging cloud-based AI.
Storm-2945, a sub-cluster of the Russian threat actor Midnight Blizzard, has been observed compromising the sign-in portals of hospitality-related organizations such as hotels since May 2026 in order to deliver malware to travelers and steal credentials in an operation we call CaptiveCrunch. The post CaptiveCrunch: Midnight Blizzard targets travelers worldwide for malware delivery and credential theft appeared first on Microsoft Security Blog.
Canada’s new Critical Cyber Systems Protection Act (Bill C-8) introduces a strict 72-hour cyber incident reporting mandate. Find out how Tenable is helping critical national infrastructure operators bridge the IT/OT divide to ensure full compliance.Key takeaways:Bill C-8 introduces stringent new cyber incident reporting requirements and heavy financial penalties for critical infrastructure operators. Eliminating network blind spots with a hybrid IT/OT discovery approach, including Safe Active Q…
Written by: Kelli Vanderlee, Stuart Carrera For years, the cybersecurity industry's understanding of software supply chain compromise has been anchored by a few watershed events, including Russian cyber espionage actor ICE RELIC’s (formerly known as APT29) 2020 compromise of SolarWinds and North Korean cyber espionage actor UNC4736's 2023 compromise of 3CX. However, Google Threat Intelligence Group (GTIG) has been tracking growth in threat activity targeting open source software repositories to…
Unit 42 details a Chinese speaking threat actor combining autonomous AI scanning across seven vulnerabilities with manual exploitation. Read more. The post Chinese-Speaking Threat Actor Harnesses AI Models for Autonomous Cyberattacks appeared first on Unit 42.
Amazon is sharing new findings about how a threat actor linked to the Democratic People’s Republic of Korea (DPRK) is targeting open source software libraries, the shared building blocks that companies around the world use to develop applications. Amazon Threat Intelligence has linked several recent compromises of popular Node Package Manager (NPM) libraries to the […]
Update (July 30): A table listing the new names of select prominent threat actors was appended to this post. Introduction Today, Google Threat Intelligence Group (GTIG) will begin rolling out a unified naming schema for tracking threat actors. This new naming taxonomy represents an effort to standardize tracking across platforms and public reporting. Why are we Adopting a Different Naming System? Historically, Mandiant and Google’s Threat Analysis Group (TAG) maintained distinct tracking system…
An unauthenticated attacker can chain two WordPress Core vulnerabilities, CVE-2026-63030 and CVE-2026-60137, to achieve remote code execution against affected WordPress installations. Multiple security firms have confirmed active in-the-wild exploitation within days of public disclosure, and public proof-of-concept exploits are circulating.Key takeaways:Two WordPress Core vulnerabilities, CVE-2026-63030 and CVE-2026-60137, can be chained together to achieve pre-authentication remote code execut…
Written by: Jules Czarniak Introduction As highlighted in the Mandiant M-Trends 2026 report, the mean time-to-exploit (TTE) has dropped to -7 days, meaning vulnerabilities are often exploited a week before a patch even exists. To keep pace, many security teams are exploring how to integrate large language model (LLM) agents into their codebases, development environments and continuous integration and continuous delivery (CI/CD) pipelines for automated vulnerability discovery and remediation. Ho…
Four Microsoft SharePoint Server vulnerabilities are under active exploitation, prompting CISA to issue a hardening alert. An additional high-severity flaw recently patched adds pressure for organizations running on-premises deployments.Key TakeawaysCISA confirmed active exploitation of three on-premises SharePoint Server vulnerabilities (CVE-2026-32201, CVE-2026-45659, CVE-2026-56164), used to gain unauthorized access, establish remote code execution, steal IIS machine keys and deploy malware …
Written by: Corné de Jong Introduction Mandiant security assessments frequently identify publicly exposed serverless applications that lack authentication, often as a result of specific business requirements. Serverless deployments typically run custom-developed code that incorporates third-party packages, making them targets for a wide range of application-level attacks, including: Local and Remote File Inclusion (LFI/RFI) Command Injection Successful exploitation of these vulnerabilities can …
SonicWall patched two recently exploited zero-day vulnerabilities in its SMA 1000 Series secure remote access appliances which may have been chained for unauthenticated remote code execution.Key takeawaysCVE-2026-15409 and CVE-2026-15410 are a pair of exploited vulnerabilities that may have been chained together to allow for code execution on SonicWall SMA1000 series appliances. Zero-day exploitation of these vulnerabilities has been observed and confirmed by SonicWall. Patches and indicators o…
See how a threat actor used SQL injection and BadIIS to gain persistence, disable Windows Defender, and quietly install a cryptominer.
Threat actors want an easy way in. Use this practical system-hardening checklist to close gaps and learn how to secure your environment today.
Threat actors are now using AI to generate custom PowerShell scripts for Active Directory attacks. Our team analyzed real vibe-coded malware and what it means for defenders.
Written by: Shebin Mathew Introduction The "Golden SAML" technique, first described by CyberArk researchers in 2017, and further detailed by Mandiant researchers in 2021, remains one of the most effective methods for threat actors to forge identity assertions in the Microsoft ecosystem. By obtaining the private key of an ADFS token-signing certificate, an attacker can authenticate as any user to any SAML-federated application, bypassing multifactor authentication (MFA), conditional access, and …
Huntress is tracking a threat actor group as they evolve a phishing attack that uses a Facebook feature to send the initial spam lure.
Cloud application security keeps threat actors away from your data. We share practical ways to protect your apps and why it matters for your team today.
Huntress analyzed a credential dumping attack where threat actors disabled Defender, killed monitoring tools, and used Mimikatz to steal credentials.
Written by: Jordan Jones Introduction Google Threat Intelligence Group (GTIG) has conducted an in-depth analysis of a .NET backdoor, tracked as STOCKSTAY, that has been continually developed and deployed by the Russia-linked threat actor Turla (aka SUMMIT, Secret Blizzard, VENOMOUS BEAR, UAC-0194) since at least December 2022. Turla has deployed STOCKSTAY against government and military organizations in Ukraine, as well as entities with an interest in Italian foreign policy. Used for ongoing cy…
Group-IB analyzes Millenium RAT version 4.*, a remote access trojan that has undergone an architectural shift from .NET to native C++, while continuing to leverage the Telegram Bot API for command and control, requiring no dedicated server infrastructure. This blog also profiles the developer “ShinyEnigma”, and threat actor cluster “Y2K Operators” responsible for active Millenium RAT exploitation campaigns. Over 62,000 compromised endpoints across more than 160 countries have been identified, w…
Learn about some of the most common cyberattacks, how threat actors access computers and networks, and how to lower future risks.
Written by: Chester Sng, Pete Boonyakarn, Logeswaran Nadarajan, Lukasz Lamparski Introduction In early 2026, Mandiant identified a threat actor targeting SD-WAN infrastructure at a service provider. After gaining initial access, the threat actor exploited a zero-day vulnerability (CVE-2026-20245) in Cisco Catalyst SD-WAN to escalate privileges from a compromised administrative account to root-level access. The vulnerability stems from the device’s file upload feature lacking the ability to prop…
During the June Tradecraft Tuesday, Huntress researchers looked at device code phishing variations and why threat actors love this attack so much.
Written by: Patrick Whitsell, John McGuiness, Muhammad Umair Google Threat Intelligence Group (GTIG) has identified a sophisticated campaign attributed to UNC6508, a People's Republic of China (PRC)-nexus threat actor, targeting institutions in the North American academic, medical, and military research community. While remaining undetected for over a year, the threat actor compromised externally facing web applications, deployed bespoke malware, pivoted to sensitive internal systems, and abuse…
Introduction Mandiant and Google Threat Intelligence Group (GTIG) have identified an active compromise and extortion campaign attributed to UNC6240 (ShinyHunters) targeting Oracle PeopleSoft application infrastructure. The activity was observed between May 27, 2026, and June 9, 2026 and is consistent with the exploitation of CVE-2026-35273, a critical remote code execution vulnerability (CVSS 9.8) in the Environment Management component. The exploitation of this vulnerability directly aligns wi…
SilabRAT (aka SnappyClient) is an advanced Remote Access Trojan (RAT) sold as a Malware-as-a-Service (MaaS) on Darkweb forums. Developed by the threat actor "o1oo1," SilabRAT is heavily focused on financial gain through credential theft. It offers stability and is capable of bypassing existing security measures.
On 12 May 2026, Microsoft published a security advisory addressing a critical vulnerability affecting Windows Server when acting as a domain controller. This vulnerability allows an unauthenticated attacker to execute arbitrary code over a network. According to The Centre for Cybersecurity Belgium (CCB), this vulnerability is currently exploited by threat actors. It is strongly recommended updating affected Windows servers as soon as possible.
Cloudflare customers can now use Cloudforce One threat intelligence directly within the WAF to block high-risk traffic. By using new cf.intel fields, security teams can automate protection against specific threat actors and targeted industries in real time.
