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Threat actors are leveraging a recently disclosed security flaw impacting Ivanti Connect Secure, Policy Secure, and ZTA gateways to deploy a backdoor codenamed  DSLog  on susceptible devices. That's according to  findings  from Orange Cyberdefense, which said it observed the exploitation of CVE-2024-21893 within hours of the public release of the proof-the-concept (PoC) code. CVE-2024-21893, which was  disclosed  by Ivanti late last month alongside CVE-2024-21888, refers to a server-side request forgery (SSRF) vulnerability in the SAML module that, if successfully exploited, could permit access to otherwise restricted resources sans any authentication. The Utah-based company has since acknowledged that the flaw has limited targeted attacks, although the exact scale of the compromises is unclear. Then, last week, the Shadowserver Foundation  revealed  a surge in exploitation attempts targeting the vulnerability originating from over 170 uniqu...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday  added  a medium-severity security flaw impacting Roundcube email software to its Known Exploited Vulnerabilities ( KEV ) catalog, based on evidence of active exploitation. The issue, tracked as  CVE-2023-43770  (CVSS score: 6.1), relates to a cross-site scripting (XSS) flaw that stems from the handling of linkrefs in plain text messages. "Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that can lead to information disclosure via malicious link references in plain/text messages," CISA said. According to a description of the bug on NIST's National Vulnerability Database (NVD), the vulnerability impacts Roundcube versions before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3. The flaw was  addressed  by Roundcube maintainers with  version 1.6.3 , which was released on September 15, 2023. Zscaler security researcher Niraj Shivtarkar has be...

Cybersecurity researchers have uncovered an "implementation vulnerability" that has made it possible to reconstruct encryption keys and decrypt data locked by Rhysida ransomware. The findings were published last week by a group of researchers from Kookmin University and the Korea Internet and Security Agency (KISA). "Through a comprehensive analysis of Rhysida Ransomware, we identified an implementation vulnerability, enabling us to regenerate the encryption key used by the malware," the researchers  said . The development marks the first successful decryption of the ransomware strain, which first made its appearance in May 2023. A  recovery tool  is being distributed through KISA. The study is also the latest to achieve data decryption by exploiting implementation vulnerabilities in ransomware, after  Magniber v2 , Ragnar Locker,  Avaddon , and  Hive . Rhysida , which is known to share overlaps with another ransomware crew called Vice Society, lever...

AI agents promise to automate everything from financial reconciliations to incident response. Yet every time an AI agent spins up a workflow, it has to authenticate somewhere; often with a high-privilege API key, OAuth token, or service account that defenders can't easily see. These "invisible" non-human identities (NHIs) now outnumber human accounts in most cloud environments, and they have become one of the ripest targets for attackers. Astrix's Field CTO Jonathan Sander put it bluntly in a recent Hacker News webinar : "One dangerous habit we've had for a long time is trusting application logic to act as the guardrails. That doesn't work when your AI agent is powered by LLMs that don't stop and think when they're about to do something wrong. They just do it." Why AI Agents Redefine Identity Risk Autonomy changes everything: An AI agent can chain multiple API calls and modify data without a human in the loop. If the underlying credential is exposed or overprivileged, each addit...

When it comes to access security, one recommendation stands out above the rest: multi-factor authentication (MFA). With passwords alone being simple work for hackers, MFA provides an essential layer of protection against breaches. However, it's important to remember that MFA isn't foolproof. It can be bypassed, and it often is.  If a password is compromised, there are several options available to hackers looking to circumvent the added protection of MFA. We'll explore four social engineering tactics hackers successfully use to breach MFA and emphasize the importance of having a strong password as part of a layered defense.  1. Adversary-in-the-middle (AITM) attacks AITM attacks involve deceiving users into believing they're logging into a genuine network, application, or website. But really, they're giving up their information to a fraudulent lookalike. This lets hackers intercept passwords and manipulate security measures, including MFA prompts. For instance, a spear-phis...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) announced that it's partnering with the Open Source Security Foundation (OpenSSF) Securing Software Repositories Working Group to publish a new framework to secure package repositories. Called the  Principles for Package Repository Security , the framework  aims  to establish a set of foundational rules for package managers and further harden open-source software ecosystems. "Package repositories are at a critical point in the open-source ecosystem to help prevent or mitigate such attacks," OpenSSF  said . "Even simple actions like having a documented account recovery policy can lead to robust security improvements. At the same time, capabilities must be balanced with resource constraints of package repositories, many of which are operated by non-profit organizations." Notably, the principles lay out four security maturity levels for package repositories across four categories of authenticati...

Incident response (IR) is a race against time. You engage your internal or external team because there's enough evidence that something bad is happening, but you're still blind to the scope, the impact, and the root cause. The common set of IR tools and practices provides IR teams with the ability to discover malicious files and outbound network connections. However, the identity aspect - namely the pinpointing of compromised user accounts that were used to spread in your network - unfortunately remains unattended. This task proves to be the most time-consuming for IR teams and has become a challenging uphill battle that enables attackers to earn precious time in which they can still inflict damage.  In this article, we analyze the root cause of the identity of IR blind spots and provide sample IR scenarios in which it acts as an inhibitor to a rapid and efficient process. We then introduce Silverfort's Unified Identity Protection Platform and show how its real-time MFA and ident...

Microsoft said it's introducing Sudo for Windows 11 as part of an early preview version to help users execute commands with administrator privileges. "Sudo for Windows is a new way for users to run elevated commands directly from an unelevated console session," Microsoft Product Manager Jordi Adoumie  said . "It is an ergonomic and familiar solution for users who want to elevate a command without having to first open a new elevated console." Sudo, short for superuser do, is a  program  for  Unix-like computer operating systems  that allows users to run programs with the security privileges of another user, usually a user with elevated permissions (e.g., administrator). The feature is available for Windows 11 builds 26045 and later. It can be enabled by heading to Settings > System > For Developers, and setting "Enable sudo" to On. Sudo for Windows comes with three options: run applications in a new elevated console window, run the elevated...

The U.S. Department of State has  announced  monetary rewards of up to $10 million for information about individuals holding key positions within the Hive ransomware operation. It is also giving away an additional $5 million for specifics that could lead to the arrest and/or conviction of any person "conspiring to participate in or attempting to participate in Hive ransomware activity." The multi-million-dollar rewards come a little over a year after a coordinated law enforcement effort  covertly infiltrated and dismantled  the darknet infrastructure associated with the Hive ransomware-as-a-service (RaaS) gang. One person with suspected ties to the group was  arrested  in Paris in December 2023. Hive, which emerged in mid-2021, targeted more than 1,500 victims in over 80 countries, netting about $100 million in illegal revenues. In November 2023, Bitdefender  revealed  that a new ransomware group called Hunters International had acquired the s...

The U.S. Justice Department (DoJ) on Friday announced the seizure of online infrastructure that was used to sell a remote access trojan (RAT) called  Warzone RAT . The domains –  www.warzone[.]ws  and three others – were "used to sell computer malware used by cybercriminals to secretly access and steal data from victims' computers," the DoJ  said . Alongside the takedown, the international law enforcement effort has arrested and indicted two individuals in Malta and Nigeria for their involvement in selling and supporting the malware and helping other cybercriminals use the RAT for malicious purposes. The defendants, Daniel Meli (27) and Prince Onyeoziri Odinakachi (31) have been charged with unauthorized damage to protected computers, with the former also accused of "illegally selling and advertising an electronic interception device and participating in a conspiracy to commit several computer intrusion offenses." Meli is alleged to have offered malware se...

Apple macOS users are the target of a new Rust-based backdoor that has been operating under the radar since November 2023. The backdoor,  codenamed   RustDoor  by Bitdefender, has been found to impersonate an update for Microsoft Visual Studio and target both Intel and Arm architectures. The exact initial access pathway used to propagate the implant is currently not known, although it's said to be distributed as FAT binaries that contain Mach-O files. Multiple variants of the malware with minor modifications have been detected to date, likely indicating active development. The earliest sample of RustDoor dates back to November 2, 2023. It comes with a wide range of commands that allow it to gather and upload files, and harvest information about the compromised endpoint. Some versions also include configurations with details about what data to collect, the list of targeted extensions and directories, and the directories to exclude. The captured information is then ...