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Articles by Sinisa Markovic
Hackers abuse refrigeration controllers to send spam and route proxy traffic
Internet-exposed refrigeration controllers used in supermarkets and cold storage facilities are being hijacked and turned into infrastructure for a suspected spam botnet and proxy services, SecurityScorecard has found.
Trio accused of using deepfake CEOs and bogus lawyers to scam businesses out of $129 million
Three men allegedly used deepfakes of company CEOs and law firm attorneys to trick employees into wiring more than $129 million to accounts the group controlled, the Justice Department said. The indictment names the three as Jacob Soall, 41, Sharon Hazan, 54, and Guy Sheetrit, 42. Soall used the alias "Rocky Balboa," and Hazan went by "Superman Cash," "Impossible Mission" and "Fat Boy," among others.
$133 million stolen from French bank via exploited service provider
Attackers siphoned an estimated $133 million from Crédit Mutuel Arkéa by using the bank's own account to wire money to other banks, from where it was possibly converted into cryptocurrency. The French cooperative banking group, which has €211.5 billion in total assets and more than 5.8 million customers, confirmed the attack days after blockchain investigator ZachXBT began tracking over $100 million in suspected stolen funds moving out of centralized exchange accounts.
OpenSSH flaw exploited in the wild just hours after disclosure (CVE-2026-123158)
An OpenSSH flaw that lets remote attackers log into passwordless accounts on Alpine Linux and other musl-based systems is being exploited, threat intelligence firm Previdian has warned. The flaw (CVE-2026-123158), nicknamed sshole by Wakefield researcher Özgün Kültekin, was fixed in OpenSSH 10.6p2 on November 5. "An attacker who can reach your SSH port can log in without knowing any password.
Residential proxy traffic caught leaving the White House network
The White House network has been working as an exit point for residential proxy services, a setup that may open a path into one of the most closely guarded networks in the world, Layer3 Intel found. In a blog post, the threat intelligence firm reported that its proxy enumeration pipeline exited through AS2650, the network registered to the Executive Office of the President, 236 times between October 5 and November 3.
US agencies warn attackers are targeting refrigeration systems that protect food and medicine
Threat actors are going after the controllers that keep grocery store freezers and cold storage rooms at safe temperatures, and they may push those units into continuous heating and defrost cycles, five US federal agencies warned in a joint advisory published on Thursday.
Rental phishing sites use live chat to win over hesitant travelers
Holiday travelers looking for a place to stay are landing on copies of popular rental platforms, complete with host names, ratings and reviews, that ask for their passwords, personal details and credit card numbers. The sites, spotted and taken down by Fortra's Intelligence and Research Experts (FIRE) team, rely on familiar branding, copied property listings and reservation details, along with urgent messages meant to rush visitors into acting.
Cyberattack on Norway's aid agency may have swept up all user data
The names and email addresses of 20,614 people registered on Norad's Grants Portal may have ended up in the hands of attackers, Norway's development aid agency has disclosed. Norad, short for the Norwegian Agency for Development Cooperation, works with partners around the world on development aid. It operates the portal, and both the agency and Norway's Ministry of Foreign Affairs use it to collect funding applications for aid projects.
Scammers capitalize on GTA 6 hype to push malware and crypto cons
Scammers are offering supposed leaked builds, early copies and phone versions of Grand Theft Auto VI (GTA 6) weeks before the game's November 19 launch, Netcraft warned in a new blog post. The company looked at GTA VI-themed domains that appeared between July 1 and October 27, 2026. Most of the lures fell into four groups, with sites borrowing the name of popular GTA VI leaker CyberLeek, promising early access, advertising mobile versions that don't exist, or giving the game away for free.
OpenAI's upcoming AI model built 948 working Linux root exploits in a single run
An automated system running on an upcoming AI model turned hundreds of Linux kernel bugs into working exploits that give an ordinary user root access, and wrote a patch for each underlying flaw, OpenAI revealed in a new research post. Source:OpenAI The company's Cyber team ran the pipeline in mid-October 2026 against the latest Linux kernel, with target machines running a stock desktop operating system from a commonly used distribution.
Russian hackers target iOS and Android users with n-day exploits
Russia's APT29 has been using compromised websites, lookalike domains and a hijacked web analytics service to target iOS and Android users with exploits for patched flaws and steal their cookies, messages and Wi-Fi passwords, according to Sekoia. APT29 watering holes target mobile devices with n-day exploits (Source: Sekoia) The company's Threat Detection & Research (TDR) team spotted the operation in mid-October 2026.
Fake job interview opened the door to $6.34 billion Binance heist
A tampered software installer and a fake job interview gave attackers the access they needed to steal about $6.34 billion in digital assets from Binance. "It was not a single isolated breach or a simple phishing incident," Binance wrote in its incident report.
Attackers exploit critical Node-RED flaw to deploy Linux bot and backdoors (CVE-2026-58115)
November 3, 2026 By Sinisa Markovic Attackers are exploiting an authentication flaw (CVE-2026-58115) in Node-RED, a programming tool built into some industrial control products, to install a Linux bot and backdoors on unprotected servers, VulnCheck has found. Node-RED is a flow-based programming tool built on Node.js that lets users wire together event-driven applications in a browser-based editor.
Police seize over 100 servers linked to investment fraud with more than €4 million in losses
Seven people have been arrested and more than 100 servers seized in a coordinated law enforcement action against an investment fraud network that started unravelling after a complaint from a German couple. Seized servers (Source: Europol) The couple went to the police in 2022 after putting their savings into an online trading platform and discovering they could not withdraw their profits. The investigation that followed uncovered an international scheme.
Attackers exploit critical Node-RED flaw to deploy Linux bot and backdoors (CVE-2026-58115)
Attackers are exploiting an authentication flaw (CVE-2026-58115) in Node-RED, a programming tool built into some industrial control products, to install a Linux bot and backdoors on unprotected servers, VulnCheck has found. Node-RED is a flow-based programming tool built on Node.js that lets users wire together event-driven applications in a browser-based editor.
Stolen AI access leaves companies with cloud bills of up to $1 million
Criminals who break into corporate cloud accounts are using the stolen access to run AI models at the victim's expense, in some cases racking up more than $100,000 in charges in a single day, Google Threat Intelligence Group (GTIG) and Mandiant researchers have found.
AI-powered infostealer picks out the most profitable parts of your stolen data
A new Windows infostealer sends the data it steals to an AI model and asks it to rank the victim's assets by how much money they could bring in, Cisco Talos has found. "There is a new idea in the cybercrime world - cast a wide net, steal everything, and let AI sort out the specifics," said Ryan Fetterman, a security researcher at Cisco. The malware calls itself VOLTA-AUTODOXER and turned up through Talos' CAIRN research effort, which tracks malware that uses AI.
Trezor warns some of its wallets may hide a seed-stealing implant
A Trezor Safe 5 sold by CryptoBilis, the reseller linked to the recent Ledger wallet drains, may contain a hidden implant that steals the owner's recovery phrase, Trezor has warned. Trezor is a Czech company and part of SatoshiLabs Group. It has made hardware wallets since 2014, and its current models are the Safe 3, Safe 5 and Safe 7.
FBI pins $6.3 billion Binance crypto heist on North Korea while scammers circle anxious users
North Korea was behind the theft of more than $6 billion in cryptocurrency from Binance, the FBI has confirmed. "The Federal Bureau of Investigation (FBI) is releasing information advising the Democratic People's Republic of Korea (North Korea) was responsible for the theft of more than $6 billion USD in virtual assets from cryptocurrency exchange Binance, on or about October 29, 2026," the bureau said in an alert published on October 31.
Ransomware gang talked AI agents into doing much of its dirty work
The group behind the Aur0ra ransomware has been using AI agents to move through victim networks, collect credentials and work its way up to domain administrator access, according to Sophos. AI-assisted intrusion workflow (Source: Sophos) The company, which tracks the group as GOLD OGRE, recovered artifacts from the Cursor AI coding assistant in late August that show the attackers handing the agents VPN logins, proxy access, targets and objectives.
Assad regime hacker who caused $136 billion market drop sentenced to 42 months
A Syrian man who used a hijacked news agency Twitter account to post a fake report of explosions at the White House has been sentenced to 42 months in prison, the US Department of Justice has announced.
Claude Code extension poisoned with persistent SSH backdoor
A tampered build of Anthropic's Claude Code extension for VS Code-compatible editors planted an SSH backdoor on developers' machines, researchers at macOS security firm Phorion have found. The malicious package, version 2.1.313, was published on Open VSX, an open-source marketplace for VS Code extensions run by the Eclipse Foundation. VS Code's default extension store is Microsoft's Visual Studio Marketplace, which never carried the compromised extension.
Binance hit by $6.3 billion theft in what could be the biggest crypto heist on record
About $6.3 billion in cryptocurrency was stolen from Binance in what might be the biggest crypto hack in history. "Binance's initial investigation suggests that the security incident may involve a compromised DevOps engineer's laptop, which allowed an attacker to gain access to a service container and submit unauthorized withdrawal transactions," the exchange said in a security update published early on October 30.
Yoba malware hides in fake desktop versions of ChatGPT and Claude
Fake GitHub projects posing as desktop versions of ChatGPT and Claude have been used to spread a malware chain that ends with a cryptocurrency miner, Check Point has found. The researchers have been tracking the campaign, dubbed Yoba, for the past two months. Its operator set up repositories and GitHub.io pages for supposed apps called GPT-5.6 Sol, GPT-6 Astra and Claude Opus, and hosted the malware as ZIP releases on GitHub.
Exploitation attempts against recently patched Oracle EBS flaw have begun (CVE-2026-101767)
Exploitation attempts have started against CVE-2026-101767, a recently patched Oracle E-Business Suite (EBS) flaw. "Our Oracle E-Business Suite decoys recorded exploratory exploits against CVE-2026-101767, an unauthenticated SQL injection in EBS's Thin Client Framework servlet that chains to remote code execution, this morning, Oct 27," Defused posted on X, noting that no public report of the flaw being attempted in the wild had existed before.
Hacktivists leak 41,000 DHS staff records, revealing undercover ICE agents
Names, offices, contact details and assignments of more than 41,000 U.S. Department of Homeland Security (DHS) employees have been leaked by a hacktivist group calling itself the Department of Peace. The group handed the data to the transparency collective Distributed Denial of Secrets (DDoSecrets) and to Swiss hacker and journalist maia arson crimew. DDoSecrets published the dataset, named Icepick, on October 28.
345,000 email addresses stolen in cyberattack on Germany's far-right party AfD
Over 345,000 unique email addresses were exposed in the September 2026 breach at German far-right political party Alternative für Deutschland (AfD). Breach notification service Have I Been Pwned (HIBP) added the data to its database on 27 October, listing email addresses and email messages as the compromised information. HIBP has flagged the incident as a sensitive breach, so the data cannot be searched publicly.
FBI seizes Virtualine, bulletproof hosting provider that promised to shield criminals from police
The FBI has seized virtualine.net, the domain of a bulletproof hosting provider that laundered money for its criminal customers and kept a forum trading in child sexual abuse material online despite repeated warnings from police and child protection groups.
Data breach at Sony-owned internet provider compromises 2.6 million customer records
Attackers who broke into the So-net member database made off with personal information belonging to more than 2.58 million current and former customers, along with the email passwords of 54,401 users, Sony Network Communications has disclosed. So-net is a Japanese internet service provider run by Sony Network Communications, part of the Sony Group.
Hackers bury inboxes in spam then show up on Microsoft Teams posing as IT support
Threat actors are flooding employees’ inboxes with spam and then contacting them on Microsoft Teams as IT support, offering to fix the problem they created, Arctic Wolf has found. The security company documented more than 400 incidents in which the external chat feature in Teams was abused. In many of these cases, the fake help desk message arrived minutes after the victim’s inbox had been filled with hundreds of newsletter and subscription confirmations.
Hackers bury inboxes in spam then show up on Microsoft Teams posing as IT support
Threat actors are flooding employees' inboxes with spam and then contacting them on Microsoft Teams as IT support, offering to fix the problem they created, Arctic Wolf has found. The security company documented more than 400 incidents in which the external chat feature in Teams was abused. In many of these cases, the fake help desk message arrived minutes after the victim's inbox had been filled with hundreds of newsletter and subscription confirmations.
Cyberattack on University of Copenhagen exposes data of 525,000 people
The University of Copenhagen (UCPH) has ruled out a second cyberattack, saying the activity that led it to shut down several administrative systems on Monday is tied to the breach it disclosed last week, which exposed personal data belonging to some 525,000 people.
DreamHost incident triggers password resets, locks customers out of email and FTP accounts
DreamHost has brought its File Manager back online after an incident that disrupted several of its services, though some of its customers still can't get into their email or FTP accounts until someone sets a new password for them. DreamHost is a web hosting provider whose services include shared, VPS, dedicated and WordPress hosting, along with domain registration, email hosting, and cloud computing and storage.
AI coding agents fall for malicious instructions planted in the Downloads folder
October 26, 2026 By Sinisa Markovic A file that a website saves to the Downloads folder without approval can trick AI coding agents into installing a malicious npm package or handing over the user’s login token when they’re opened in that folder, Forever Security has found. The file is called AGENTS.md, a plain text document developers place in a project folder with instructions for coding agents, the AI tools that write and run code on their own.
Security pros reckon the biggest AI risk comes with an employee badge
Employees pasting company data into AI tools worry security teams more than AI-powered attacks do. Most-concerning risks of AI agents (Source: O'Reilly) AI-generated phishing, the attack they run into most often, made the list of top concerns for only a quarter of the 209 security professionals O'Reilly surveyed in September. Mike Loukides, VP of content strategy at O'Reilly Media, believes the fear of AI wiping out humanity distracts from harm happening today. "We don't need panic.
AI coding agents fall for malicious instructions planted in the Downloads folder
A file that a website saves to the Downloads folder without approval can trick AI coding agents into installing a malicious npm package or handing over the user's login token when they're opened in that folder, Forever Security has found. The file is called AGENTS.md, a plain text document developers place in a project folder with instructions for coding agents, the AI tools that write and run code on their own.
UK proposes 14-year jail terms for subsea cable saboteurs
Damaging a cable on the seabed off the UK coast could soon cost someone 14 years of their life behind bars, under plans the British government published this week. The proposal comes from a White Paper by the Department for Digital, Culture, Media and Sport that would update laws protecting undersea cables and pipelines, some of which date back 140 years.
Microsoft 365 accounts compromised at 79 organizations without a single guessed password
An attacker who spent ten weeks replaying stolen Microsoft 365 sign-in sessions broke into email accounts at 79 organizations and used hidden inbox rules to keep victims from seeing parts of their own mail, according to Huntress. The researchers tracked the campaign between July 14 and September 22, 2026, counting 497 successful sign-ins and more than 200,000 failed login attempts.
Hackers hijack exposed AI models to launch cyberattacks at victims’ expense
An attack tool built around AI goes looking for AI models that anyone on the internet can reach, then uses them to plan break-ins while the model’s owner pays for the computing power. Symantec captured the agent’s instruction set this summer through a honeypot posing as an unprotected AI service, researchers Priti More and Susmit Yenkar wrote. Its operators sent their entire working prompt to the decoy, expecting a live model on the other end to carry out the instructions.
Capcom data breach exposes 11.7 million account records
Players who signed up for Capcom's online account service may want to look twice at emails that seem to come from the company. The company has disclosed that a third party gained unauthorized access to customer information linked to CAPCOM ID, the account people use to sign in to the company's web services and to play some of its games online. It detected suspicious activity on October 19 and confirmed the intrusion the same day.
Hackers hijack exposed AI models to launch cyberattacks at victims' expense
An attack tool built around AI goes looking for AI models that anyone on the internet can reach, then uses them to plan break-ins while the model's owner pays for the computing power. Symantec captured the agent's instruction set this summer through a honeypot posing as an unprotected AI service, researchers Priti More and Susmit Yenkar wrote. Its operators sent their entire working prompt to the decoy, expecting a live model on the other end to carry out the instructions.
LiteLLM hit by second supply chain attack this year, users urged to rotate credentials
A malicious release of LiteLLM pushed to PyPI and Docker registries on Wednesday carried malware built to harvest cloud logins, developer secrets and API keys for AI services from anyone who installed it. "LiteLLM got compromised... again," security researcher Kevin Beaumont wrote on Mastodon.
Signal flaw could expose audio and video even after users hang up
A flaw in Signal's calling library could let the other person on a call keep receiving a user's audio, and possibly video, after that user hangs up. Tracked as CVE-2026-113380, the vulnerability affects RingRTC versions before 2.72.0. RingRTC is the open source library that powers voice and video calls in Signal's apps, built on WebRTC, the technology browsers use for live audio and video.
eMudhra security blunder left trusted CA signing keys exposed to anyone
Eight intermediate certificates issued by Indian certificate authority eMudhra were secured with private keys so weak that anyone could recover them from the public certificates in under a second. On its website, the company highlights that it has issued more than 60 million digital certificates. A security researcher known as Wayne discovered the flaw on October 17 while running a check against the Common CA Database (CCADB).
Ransomware gangs have been exploiting Palo Alto GlobalProtect VPN flaw since June
Several ransomware groups are exploiting CVE-2026-0257, an authentication bypass in Palo Alto Networks' PAN-OS GlobalProtect patched in May, to break into organizations in sectors ranging from healthcare and education to government and energy. CVE-2026-0257 stems from the firewalls relying on cookies without performing detailed validation and integrity checking, which allows remote, unauthenticated attackers to bypass security restrictions and establish an unauthorized VPN connection.
Info-stealing malware slipped into OVHcloud CLI releases on GitHub
OVHcloud, the French cloud computing and web hosting company, alerted customers that a hacker tampered with its open-source command-line interface (CLI) tool to spread information-stealing malware. OVHcloud CEO Octave Klaba disclosed the incident on X, warning users who downloaded the latest CLI release that day to update the tool or delete it.
Incomplete security patches show hackers where to look next
Security patches are turning into roadmaps for attackers, with a growing share of fixes later found incomplete or open to bypass. Oren Yomtov, a security researcher at Terra Security, began tracking broken fixes after the team kept running into them in its own work over the past year. “A fix would ship, a bypass would be found, and another fix would go out.
Incomplete security patches show hackers where to look next
Security patches are turning into roadmaps for attackers, with a growing share of fixes later found incomplete or open to bypass. Oren Yomtov, a security researcher at Terra Security, began tracking broken fixes after the team kept running into them in its own work over the past year. "A fix would ship, a bypass would be found, and another fix would go out.
Attackers exploit Siemens Software Center flaw in active ClickFix malware campaign
Siemens has confirmed the active exploitation of CVE-2026-110936, a DLL side-loading vulnerability in Siemens Software Center, the company's tool for downloading, installing and managing its software.
US Army is developing AI agents that could strike enemy networks and vanish without a trace
The US Army is looking for AI agents that can slip into an adversary's network, find their target, copy themselves onto nearby tablets and computers, and then erase themselves before anyone notices. Over the past few months, AI agents with no instruction to attack anything have breached Hugging Face infrastructure and broken into Australian government computers, raising alarm among governments and tech companies.
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