In this episode of the podcast, host Paul Roberts interviews Nishawn Smagh of the firm GreyNoise Intelligence about the findings of their State of the Edge report, an analysis of GreyNoise data on risks stemming from compromised edge devices such as broadband routers, VPN gateways, smart home devices and more. Shawn and Paul talk about how attackers are turning edge devices into their favorite entry point, and strategies for organizations to counter the growing risk of compromised edge devices.

The post Edge Devices Are Your Cyber Underbelly. Here’s Why. appeared first on The Security Ledger with Paul F. Roberts.

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Why Every Cybersecurity Professional Should Read the Original Records By Gary S. Miliefsky Publisher, Cyber Defense Magazine For more than a decade, cybersecurity professionals have watched researchers at DEF CON’s...

The post Hacking US Elections: The First Tranche of Declassified Election Integrity Documents appeared first on Cyber Defense Magazine.

Three vulnerabilities are actively exploited in attacks, including two that have been targeted as zero-days.

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Russian state-backed hackers are exploiting neglected routers to access critical infrastructure networks, prompting agencies worldwide to urge organizations to replace outdated equipment and tighten basic network security.

The federal government is warning users of home and small office routers to secure their devices as Russia state hackers continue to mass-compromise them for use in obscuring nefarious actions against sensitive organizations in the public and private sectors.

Both the Russian and Chinese governments have been compromising routers for years, sometimes in prolonged tugs-of-war to wrest control of devices the other has already commandeered. The US government has occasionally issued covert commands and taken other steps to disinfect routers. Google and other companies have also worked to disrupt the massive botnets that control compromised routers in lockstep. The actions to date are little more than whack-a-mole exercises as the operators simply replace their botnets with new ones.

Proxy networks: The go-to tool

“Russian Federal Security Service (FSB) Center 16 cyber actors continue to exploit poorly configured and vulnerable networking devices worldwide, opportunistically compromising multiple critical infrastructure sector networks,” the Cybersecurity and Infrastructure Security Agency said Monday. The hacking groups are tracked under various names, including Berserk Bear, Energetic Bear, Crouching Yeti, Dragonfly, Ghost Blizzard, and Static Tundra. The advisory was co-issued by governments from around the world, including Australia, Denmark, New Zealand, and the UK.

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Independent cybersecurity journalist Brian Krebs reported in May that a security researcher with cyber firm GitGuardian alerted him to reams of exposed passwords stored in a publicly accessible GitHub repository, which an employee of a CISA contractor had uploaded.

The Januscape vulnerability allows a user in a guest VM managed by the Linux Kernel Virtual Machine (KVM) to corrupt memory in the host system and break out of isolation.

KVM virtualization is used by major hosting platforms like Amazon AWS, Google GCP, Digital Ocean, and many more. All of the shared hosting platforms count on virtualization to isolate untrusted guest systems from the physical hardware and each other; being able to corrupt memory for all guests or break isolation presents a major threat.

The bug report says the error has been present for 16 years, which is nearly the entire lifetime of the KVM subsystem in Linux. Fixes are available in mainline, and major hosting providers who count on KVM are likely already updating.

Vulnerabilities In Balcony Solar

Micro solar, or “balcony solar”, installs have been gaining traction in Europe as a way to offset rising electrical costs by connecting solar and battery systems to a house or apartment power system.

Vulnerabilities have been found in the popular Hoymiles micro-inverter, which uses a proprietary RF radio protocol to manage the devices. Unfortunately, it looks like this protocol has no encryption or authentication beyond validating the serial number, and the serial number is also available over a wireless probe command.

Armed with a Nordic nRF radio researchers were able to discover nearby inverters in the wild and collect the serial numbers, though of course they stopped short of issuing commands to random users.

The wireless management control allows controlling the device power and output levels, as well as setting a lockout PIN, which the researchers suspect could be used to disable devices and lock the legitimate owners out completely.

There are an estimated 500,000 units in use, and currently the only known mitigation is to unplug the device entirely and disconnect the solar panels, though the team suggests that setting an anti-theft PIN may also help – or at least prevent an unknown PIN being set.

Be sure to check out the link for an in-depth analysis of the protocol and the surprising lack of protection.

OpenSSH 10.4

OpenSSH 10.4 is out, bringing a handful of security fixes and new features.

The most interesting security fixes appear to be to file handling in the sftp and scp file transfer tools, a malicious remote server could cause the files to be downloaded to the wrong directories. Besides those, the security fixes seem relatively calm, making behavior more consistent when forwarding and tunneling options were in conflict, mitigating a potential denial of service, and cleaning up other behavior.

OpenSSH 10.4 introduces some experimental support for additional post-quantum encryption standards, but beyond that seems to be a normal update.

Tenda Routers (may) Have Backdoor

According to CVE-2026-11405, Tenda brand routers may have a deliberate backdoor in the web interface.

The vulnerability report claims that the httpd binary contains a fallback to a plaintext, hardcoded password that allows anything on the internal network to bypass authentication and reconfigure the router. This seems entirely plausible, based on issues found in other router firmwares, however additional reports raise doubts about the pervasiveness of the backdoor, or if it exists in all firmware versions.

If you have a Tenda brand router and are so inclined, now might be a great time to investigate OpenWRT or other alternate, updated firmware, but there’s probably not a reason to panic just yet.

Tricking the GitHub Agent With Prompt Injection

Can we go a week without discussing prompt injection in AI agents? Apparently the answer is no.

Noma Labs reveals how they were able to use prompt injection against the GitHub support agent to reveal private repositories of an organization. Leveraging the GitHub Agentic Workflows that link workflows with AI agents, Noma Labs were able to file an issue in a public repository that exposed private repositories in the same organization.

The attack appears to be as simple as filing an issue in the public repo, and requesting the contents of files in both the public and private repo, which the agent happily provided. Not only did the AI agent provide the file content of private repos, but it put it in a public issue in the public repository!

Noma Labs says in the writeup that GitHub had instituted guardrails to prevent an agent from accessing private repositories, but simply including the request to “additionally” perform other tasks was sufficient to bypass. This makes GitHub the latest in a seemingly endless chain of AI agents happily helping bypass corporate security, and it doesn’t seem like a trend that will slow down for a while.

Windows Device Identifier Catches Ransomware Operator

Windows installs contain a globally unique identifier generated during the initial install, which is used to track device behavior across Microsoft platforms. Toms Hardware reports that during an investigation of the “Scattered Spider” ransomware group, Microsoft provided records tracking the GDID of one of the ransomware operators, allowing the identification and arrest of one of the groups members.

Scattered Spider has been responsible for millions of dollars in ransomware attacks globally, including high-profile ransomware attacks against major Las Vegas resorts, Qantas airlines, Visa, and hundreds of other companies.

Court documents reveal that following the arrest of one of the suspected members of the group, the Windows global ID was used to link other behavior across Azure, video games, and other telemetry.

CISA reviews lessons learned

Mentioned here in May, the US government cybersecurity agency (CISA) suffered a disclosure of authentication tokens, cloud infrastructure, and plaintext passwords via a public GitHub repository named “Private-CISA” and operated by a contractor.

CISA has published the results of their internal review. Unsurprisingly, as a large government agency, CISA essentially followed the playbook for dealing with incidents: identify the most critical issues and disable the access of the contractor who exposed credentials, determine the full scope of disclosed data, and terminate accounts, change passwords, and expire authentication tokens which were exposed.

More NPM malware packages

Opensource Malware reports on additional infostealer malware uploaded to the NPM repository. Like most NPM-based malware, these packages rely on the install script mechanism to trigger arbitrary commands, firing immediately during package install with no additional interaction.

All of the malware packages mimic existing popular packages and depend on user typos or confusion to get selected. Once triggered, the malware collects a machine fingerprint, git user information, GitHub account information, SSH account information, and corporate identifiers. The packages are largely nonfunctional – the code in the package itself is irrelevant, once a victim triggers the install the malware payload is fired.

All of the packages were uploaded by the same source, tracked to the owner of a cybersecurity company. It is unclear if this is a misguided attempt to generate leads or hype, or if this is a research project gone wrong, but the payload of the malicious packages has been developed and tuned over time. For a company trying to build a reputation or trust, this is surely the wrong way to do it.

Google announced that it helped take down NetNut, a 2 million strong malicious residential proxy network. The incident highlights the growing risks posed by residential proxy networks that quietly conscript consumer devices into services used by cybercriminals and nation-state actors alike.

The post Residential Proxy Risks: Understanding Google’s Latest Action Against 2 Million Strong NetNut appeared first on The Security Ledger with Paul F. Roberts.

Two newly disclosed critical vulnerabilities in Adobe ColdFusion and Langflow join two Joomla extension flaws in CISA's Known Exploited Vulnerabilities catalog, with federal agencies given until July 10 to patch.

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