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A Russian-speaking ransomware outfit likely targeted an unnamed entity in the gambling and gaming sector in Europe and Central America by repurposing custom tools developed by other APT groups like Iran's MuddyWater, new research has found. The unusual attack chain involved the abuse of stolen credentials to gain unauthorized access to the victim network, ultimately leading to the deployment of Cobalt Strike payloads on compromised assets,  said  Felipe Duarte and Ido Naor, researchers at Israeli incident response firm Security Joes, in a report published last week. Although the infection was contained at this stage, the researchers characterized the compromise as a case of a suspected ransomware attack. The intrusion is said to have taken place in February 2022, with the attackers making use of post-exploitation tools such as  ADFind , NetScan,  SoftPerfect , and  LaZagne . Also employed is an AccountRestore executable to brute-force administrator credenti...

A newly disclosed security flaw in the Linux kernel could be leveraged by a local adversary to gain elevated privileges on vulnerable systems to execute arbitrary code, escape containers, or induce a  kernel panic . Tracked as  CVE-2022-25636  (CVSS score: 7.8), the vulnerability impacts Linux kernel versions 5.4 through 5.6.10 and is a result of a heap out-of-bounds write in the netfilter subcomponent in the kernel. The issue was  discovered  by Nick Gregory, a senior threat researcher at Sophos. "This flaw allows a local attacker with a user account on the system to gain access to out-of-bounds memory, leading to a system crash or a privilege escalation threat," Red Hat  said  in an advisory published on February 22, 2022. Similar alerts have been released by  Debian ,  Oracle Linux ,  SUSE , and  Ubuntu . Netfilter is a  framework  provided by the Linux kernel that enables various networking-related operations, inc...

New findings released last week showcase the overlapping source code and techniques between the operators of  Shamoon  and  Kwampirs , indicating that they "are the same group or really close collaborators." "Research evidence shows identification of co-evolution between both Shamoon and Kwampirs malware families during the known timeline," Pablo Rincón Crespo of Cylera Labs  said . "If Kwampirs is based on the original Shamoon, and Shamoon 2 and 3 campaign code is based on Kwampirs, […] then the authors of Kwampirs would be potentially the same as the authors of Shamoon, or must have a very strong relationship, as has been seen over the course of many years," Rincón Crespo added. Shamoon, also known as DistTrack, functions as an information-stealing malware that also incorporates a destructive component that allows it to overwrite the Master Boot Record (MBR) with arbitrary data so as to render the infected machine inoperable. The malware, developed...

I had the honor of hosting the first episode of the Xposure Podcast live from Xposure Summit 2025. And I couldn't have asked for a better kickoff panel: three cybersecurity leaders who don't just talk security, they live it. Let me introduce them. Alex Delay , CISO at IDB Bank, knows what it means to defend a highly regulated environment. Ben Mead , Director of Cybersecurity at Avidity Biosciences, brings a forward-thinking security perspective that reflects the innovation behind Avidity's targeted RNA therapeutics. Last but not least, Michael Francess , Director of Cybersecurity Advanced Threat at Wyndham Hotels and Resorts, leads the charge in protecting the franchise. Each brought a unique vantage point to a common challenge: applying Continuous Threat Exposure Management (CTEM) to complex production environments. Gartner made waves in 2023 with a bold prediction: organizations that prioritize CTEM will be three times less likely to be breached by 2026. But here's the kicker -...

Multiple security vulnerabilities have been disclosed in popular package managers that, if potentially exploited, could be abused to run arbitrary code and access sensitive information, including source code and access tokens, from compromised machines. It's, however, worth noting that the flaws require the targeted developers to handle a malicious package in conjunction with one of the affected package managers. "This means that an attack cannot be launched directly against a developer machine from remote and requires that the developer is tricked into loading malformed files," SonarSource researcher Paul Gerste  said . "But can you always know and trust the owners of all packages that you use from the internet or company-internal repositories?" Package managers refer to  systems  or a set of tools that are used to automate installing, upgrading, configuring third-party dependencies required for developing applications. While there are inherent  security ...

The Russian government has established its own TLS certificate authority ( CA ) to address issues with accessing websites that have arisen in the wake of sanctions imposed by the west following the country's unprovoked military invasion of Ukraine. According to a message posted on the  Gosuslugi  public services portal, the Ministry of Digital Development is expected to provide a domestic replacement to handle the issuance and renewal of TLS certificates should they get revoked or expired. The service is offered to all legal entities operating in Russia, with the certificates delivered to site owners upon request within 5 working days. TLS certificates are used to digitally bind a cryptographic key to an organization's details, enabling web browsers to confirm the domain's authenticity and ensure that the communication between a client computer and the target website is secure. The proposal comes as companies like DigiCert have been restricted from doing business in ...

Meta Platforms' WhatsApp and Cloudflare have banded together for a new initiative called Code Verify to validate the authenticity of the messaging service's web app on desktop computers. Available in the form of a Chrome and Edge  browser extension , the  open-source add-on  is designed to "automatically verif[y] the authenticity of the WhatsApp Web code being served to your browser," Facebook  said  in a statement. The goal with Code Verify is to confirm the integrity of the web application and ensure that it hasn't been tampered with to inject malicious code. The social media company is also planning to release Firefox and Safari plugins to achieve the same level of security across browsers. The system works with Cloudflare acting as a third-party audit to compare the cryptographic hash of WhatsApp Web's JavaScript code that's shared by Meta with that of a locally computed hash of the code running on the browser client. Code Verify is also meant t...

The Iranian state-sponsored threat actor known as MuddyWater has been attributed to a new swarm of attacks targeting Turkey and the Arabian Peninsula with the goal of deploying remote access trojans (RATs) on compromised systems. "The MuddyWater supergroup is highly motivated and can use unauthorized access to conduct espionage, intellectual property theft, and deploy ransomware and destructive malware in an enterprise," Cisco Talos researchers Asheer Malhotra, Vitor Ventura, and Arnaud Zobec  said  in a report published today. The group, which has been active since at least 2017, is known for its attacks on various sectors that help further advance Iran's geopolitical and national security objectives. In January 2022, the U.S. Cyber Command attributed the actor to the country's Ministry of Intelligence and Security (MOIS). MuddyWater is also believed to be a "conglomerate of  multiple teams  operating independently rather than a single threat actor group,...

Researchers have disclosed a new technique that could be used to circumvent existing hardware mitigations in modern processors from Intel, AMD, and Arm, and stage  speculative execution  attacks such as Spectre to leak sensitive information from host memory. Attacks like  Spectre  are designed to break the isolation between different applications by taking advantage of an  optimization technique  called speculative execution in CPU hardware implementations to trick programs into accessing arbitrary locations in memory and thus leak their secrets. While chipmakers have incorporated both software and hardware  defenses , including  Retpoline  as well as safeguards like Enhanced Indirect Branch Restricted Speculation ( eIBRS ) and  Arm   CSV2 , the latest method demonstrated by VUSec researchers aims to get around all these protections. Called  Branch History Injection  (BHI or Spectre-BHB), it's a new variant of Spectr...

Yaroslav Vasinskyi , a Ukrainian national, linked to the Russia-based  REvil ransomware group  has been extradited to the U.S. to face charges for his role in carrying out the file-encrypting malware attacks against several companies, including Kaseya last July. The 22-year-old had been previously arrested in Poland in October 2021, prompting the U.S. Justice Department (DoJ) to  file charges  of conspiracy to commit fraud and related activity in connection with computers, damage to protected computers, and conspiracy to commit money laundering. Ransomware is the digital equivalent of extortion wherein cybercrime actors encrypt victims' data and take it hostage in return for a monetary payment to recover the data, failing which the stolen information is published online or sold to other third-parties. According to the DoJ, in addition to the headline-grabbing attacks on JBS and Kaseya, REvil is said to have propagated its infection to more than 175,000 computer...

The insidious Emotet botnet, which staged a return in November 2021 after a 10-month-long hiatus, is once again exhibiting signs of steady growth, amassing a swarm of over 100,000 infected hosts for perpetrating its malicious activities. "While Emotet has not yet attained the same scale it once had, the botnet is showing a strong resurgence with a total of approximately 130,000 unique bots spread across 179 countries since November 2021," researchers from Lumen's Black Lotus Labs  said  in a report. Emotet, prior to its  takedown  in late January 2021 as part of a coordinated law enforcement operation dubbed "Ladybird," had infected no fewer than 1.6 million devices globally, acting as a conduit for cybercriminals to install other types of malware, such as banking trojans or ransomware, onto compromised systems. The malware  officially resurfaced  in November 2021  using TrickBot  as a delivery vehicle, with the latter  shuttering its at...

Threat actors have been observed abusing a high-impact reflection/amplification method to stage sustained distributed denial-of-service (DDoS) attacks for up to 14 hours with a record-breaking amplification ratio of 4,294,967,296 to 1. The attack vector – dubbed TP240PhoneHome ( CVE-2022-26143 ) – has been weaponized to launch significant DDoS attacks targeting broadband access ISPs, financial institutions, logistics companies, gaming firms, and other organizations. "Approximately 2,600 Mitel MiCollab and MiVoice Business Express collaboration systems acting as PBX-to-Internet gateways were incorrectly deployed with an abusable system test facility exposed to the public Internet," Akamai researcher Chad Seaman said in a joint advisory . "Attackers were actively leveraging these systems to launch reflection/amplification DDoS attacks of more than 53 million packets per second (PPS)." DDoS reflection attacks typically involve spoofing the IP address of a vic...

Three high-impact security vulnerabilities have been disclosed in  APC Smart-UPS devices  that could be abused by remote adversaries as a physical weapon to access and control them in an unauthorized manner. Collectively dubbed  TLStorm , the flaws "allow for complete remote takeover of Smart-UPS devices and the ability to carry out extreme cyber-physical attacks," Ben Seri and Barak Hadad, researchers from IoT security company Armis, said in a report published Tuesday. Uninterruptible power supply ( UPS ) devices function as emergency backup power providers in mission-critical environments such as medical facilities, server rooms, and industrial systems. Most of the afflicted devices, totaling over 20 million, have been identified so far in healthcare, retail, industrial, and government sectors. TLStorm consists of a trio of critical flaws that can be triggered via unauthenticated network packets without requiring any user interaction, meaning it's a zero-click att...