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If you invite guest users into your Entra ID tenant, you may be opening yourself up to a surprising risk.  A gap in access control in Microsoft Entra's subscription handling is allowing guest users to create and transfer subscriptions into the tenant they are invited into, while maintaining full ownership of them.  All the guest user needs are the permissions to create subscriptions in their home tenant, and an invitation as a guest user into an external tenant. Once inside, the guest user can create subscriptions in their home tenant, transfer them into the external tenant, and retain full ownership rights. This stealthy privilege escalation tactic allows a guest user to gain a privileged foothold in an environment where they should only have limited access. Many organizations treat guest accounts as low-risk based on their temporary, limited access, but this behavior, which works as designed, opens the door to known attack paths and lateral movement within the resource t...

Unknown threat actors have been distributing a trojanized version of SonicWall's SSL VPN NetExtender application to steal credentials from unsuspecting users who may have installed it. "NetExtender enables remote users to securely connect and run applications on the company network," SonicWall researcher Sravan Ganachari said . "Users can upload and download files, access network drives, and use other resources as if they were on the local network." The malicious payload delivered via the rogue VPN software has been codenamed SilentRoute by Microsoft, which detected the campaign along with the network security company. SonicWall said the malware-laced NetExtender impersonates the latest version of the software (10.3.2.27) and has been found to be distributed via a fake website that has since been taken down. The installer is digitally signed by CITYLIGHT MEDIA PRIVATE LIMITED." This suggests that the campaign is targeting users searching for NetExten...

Cybersecurity researchers have uncovered a fresh batch of malicious npm packages linked to the ongoing Contagious Interview operation originating from North Korea. According to Socket , the ongoing supply chain attack involves 35 malicious packages that were uploaded from 24 npm accounts. These packages have been collectively downloaded over 4,000 times. The complete list of the JavaScript libraries is below - react-plaid-sdk sumsub-node-websdk vite-plugin-next-refresh vite-plugin-purify nextjs-insight vite-plugin-svgn node-loggers react-logs reactbootstraps framer-motion-ext serverlog-dispatch mongo-errorlog next-log-patcher vite-plugin-tools pixel-percent test-topdev-logger-v1 test-topdev-logger-v3 server-log-engine logbin-nodejs vite-loader-svg struct-logger flexible-loggers beautiful-plugins chalk-config jsonpacks jsonspecific jsonsecs util-buffers blur-plugins proc-watch node-orm-mongoose prior-config use-videos lucide-node, and router-parse ...

Microsoft on Tuesday announced that it's extending Windows 10 Extended Security Updates ( ESU ) for an extra year by letting users either pay a small fee of $30 or by sync their PC settings to the cloud. The development comes ahead of the tech giant's upcoming October 14, 2025, deadline , when it plans to officially end support and stop providing security updates for devices running Windows 10. The desktop operating system was launched in July 2015. The Windows maker describes ESU as a "last resort option" for customers who need to run legacy Microsoft software that has reached end-of-life (EoL) status. This is meant to be a temporary solution while migrating to a newer supported platform. According to StatCounter data as of May 2025, Windows 10's market share stands at 53.19% globally, making it the most widely used version of Windows. This is followed by Windows 11 at 43%. As part of the new enrollment options announced by Microsoft, individuals can opt-...

The United States Embassy in India has announced that applicants for F, M, and J nonimmigrant visas should make their social media accounts public. The new guideline seeks to help officials verify the identity and eligibility of applicants under U.S. law. The U.S. Embassy said every visa application review is a "national security decision." "Effective immediately, all individuals applying for an F, M, or J nonimmigrant visa are requested to adjust the privacy settings on all of their personal social media accounts to 'public' to facilitate vetting necessary to establish their identity and admissibility to the United States," the embassy said in a post on X. Under the new rules, Indian students and others planning to pursue academia or enroll in vocational or exchange programs are mandated to ensure that their social media profiles are set to public before submitting their visa applications. A refusal to set the accounts to "public" could be g...

Cybersecurity researchers have detailed two novel methods that can be used to disrupt cryptocurrency mining botnets. The methods take advantage of the design of various common mining topologies in order to shut down the mining process , Akamai said in a new report published today. "We developed two techniques by leveraging the mining topologies and pool policies that enable us to reduce a cryptominer botnet's effectiveness to the point of completely shutting it down, which forces the attacker to make radical changes to their infrastructure or even abandon the entire campaign," security researcher Maor Dahan said . The techniques, the web infrastructure company said, hinge on exploiting the Stratum mining protocol such that it causes an attacker's mining proxy or wallet to be banned, effectively disrupting the operation. The first of the two approaches, dubbed bad shares, entails banning the mining proxy from the network, which, in turn, results in the shutdow...

Unidentified threat actors have been observed targeting publicly exposed Microsoft Exchange servers to inject malicious code into the login pages that harvest their credentials. Positive Technologies, in a new analysis published last week, said it identified two different kinds of keylogger code written in JavaScript on the Outlook login page - Those that save collected data to a local file accessible over the internet Those that immediately send the collected data to an external server The Russian cybersecurity vendor said the attacks have targeted 65 victims in 26 countries worldwide, and marks a continuation of a campaign that was first documented in May 2024 as targeting entities in Africa and the Middle East. At that time, the company said it had detected no less than 30 victims spanning government agencies, banks, IT companies, and educational institutions, with evidence of the first compromise dating back to 2021. The attack chains involve exploiting known flaws in M...

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 -...

Misconfigured Docker instances are the target of a campaign that employs the Tor anonymity network to stealthily mine cryptocurrency in susceptible environments. "Attackers are exploiting misconfigured Docker APIs to gain access to containerized environments, then using Tor to mask their activities while deploying crypto miners," Trend Micro researchers Sunil Bharti and Shubham Singh said in an analysis published last week. In using Tor, the idea is to anonymize their origins during the installation of the miner on compromised systems. The attacks, per the cybersecurity company, commence with a request from the IP address 198.199.72[.]27 to obtain a list of all containers on the machine. If no containers are present, the attacker proceeds to create a new one based on the "alpine" Docker image and mounts the "/hostroot" directory – i.e., the root directory ("/") of the physical or virtual host machine – as a volume inside it. This behavior p...

The U.S. House of Representatives has formally banned congressional staff members from using WhatsApp on government-issued devices, citing security concerns. The development was first reported by Axios. The decision, according to the House Chief Administrative Officer (CAO), was motivated by worries about the app's security. "The Office of Cybersecurity has deemed WhatsApp a high-risk to users due to the lack of transparency in how it protects user data, absence of stored data encryption, and potential security risks involved with its use," the CAO said in a memo, according to Axios. To that end, House staff are prohibited from downloading the app on any device issued by the government, including its mobile, desktop, or web browser versions. WhatsApp has pushed back against these concerns, stating messages sent on the platform are end-to-end encrypted by default, and that it offers a "higher level" of security than most of the apps on CAO's approved ...

The Computer Emergency Response Team of Ukraine (CERT-UA) has warned of a new cyber attack campaign by the Russia-linked APT28 (aka UAC-0001) threat actors using Signal chat messages to deliver two previously undocumented malware families dubbedd BEARDSHELL and COVENANT. BEARDSHELL, per CERT-UA, is written in C++ and offers the ability to download and execute PowerShell scripts, as well as upload the results of the execution back to a remote server over the Icedrive API. The agency said it first observed BEARDSHELL, alongside a screenshot-taking tool named SLIMAGENT, as part of incident response efforts in March-April 2024 in a Windows computer. While there were no details available on how the infection took place at that time, the agency said it received threat intelligence from ESET more than a year later that detected evidence of unauthorized access to a "gov.ua" email account. The exact nature of the information shared was not disclosed, but it likely pertains to a...

The Canadian Centre for Cyber Security and the U.S. Federal Bureau of Investigation (FBI) have issued an advisory warning of cyber attacks mounted by the China-linked Salt Typhoon actors to breach major global telecommunications providers as part of a cyber espionage campaign. The attackers exploited a critical Cisco IOS XE software ( CVE-2023-20198 , CVSS score: 10.0) to access configuration files from three network devices registered to a Canadian telecommunications company in mid-February 2025. The threat actors are also said to have modified at least one of the files to configure a Generic Routing Encapsulation ( GRE ) tunnel, enabling traffic collection from the network. The name of the targeted company was not disclosed. Stating that the targeting likely goes beyond the telecommunications sector, the agencies said the targeting of Canadian devices may permit the threat actors to collect information from the compromised networks and use them as leverage to breach additiona...