Malvertising Sends Malware in Pieces, Then Makes the Browser Build the Executable

A malvertising operation dubbed SourTrade is making victims' browsers build the final Windows executable themselves, using a legitimate Bun runtime as its base instead of serving one complete malicious file from a fixed URL. Confiant, which detailed the campaign on July 23, 2026, said it has...

Fastjson 1.x RCE Vulnerability Targeted in Attacks With No Patched Available

Security firms ThreatBook and Imperva say attackers are targeting a critical flaw in Fastjson, Alibaba's JSON library for Java. In affected Spring Boot applications, a malicious JSON request can execute code without authentication, with the privileges of the Java process. Tracked as CVE-2026-1672...

CTM360 Research Reveals How Insurance Phishing Has Evolved Into Real-Time Account Hijacking

For years, phishing campaigns targeting financial institutions followed the same playbook. Victims were tricked into entering usernames and passwords, attackers collected the credentials, and accounts were compromised later when an opportunity arose. That model is changing. Recent investigations...

Cl0p Affiliates Target Internet-Exposed PTC Windchill and FlexPLM with Unauthenticated RCE

Threat actors linked to the Cl0p aka Chubby Scorpius, FIN11, Graceful Spider, and Lace Tempest ransomware campaign are exploiting flaws in internet-exposed PTC Windmill and FlexPLM deployments as part of a new data extortion campaign. "Attackers chain a pre-authentication information disclosure i...

Researcher Publishes GitLab RCE PoC Letting Authenticated Users Run Commands as Git

Security researchers at depthfirst published working exploit code on July 24 for a GitLab flaw that GitLab patched six weeks earlier, on June 10. It runs commands as git on any self-managed 18.11.3 server that has not taken the update. Any authenticated user who can push to a project can run it...

DevMan RaaS Portal Centralizes Payload Builds, Victim Management, and Affiliate Payouts

The operators of the DevMan ransomware-as-a-service RaaS scheme are maintaining a dedicated web platform that offers affiliates the ability to build payloads, oversee earnings, and manage various aspects related to victims. Swiss cybersecurity company PRODAFT is tracking the centrally administere...

BlueNoroff Zoom Phishing Kit Profiles Crypto Wallets Before Malware Delivery

The North Korean threat actors behind the ClickFix-style campaigns that employ typosquatted Zoom and Microsoft Teams domains have been found to operate an active phishing kit to impersonate the videoconferencing platforms in social engineering campaigns designed to deliver malware. "BlueNoroff ha...

Certighost Exploit Lets Low-Privileged Active Directory Users Impersonate a Domain Controller

Researchers H0j3n and Aniq Fakhrul published a working exploit on July 24 that lets a low-privileged Active Directory user obtain a certificate for a Domain Controller and authenticate as that machine. They codenamed the flaw Certighost. Because Domain Controller accounts carry directory...

ChatGPT AgentForger Flaw Could Deploy Rogue Workspace Agents via a Phishing Link

Cybersecurity researchers have disclosed a critical vulnerability in OpenAI's ChatGPT Workspace Agents that could have allowed a single phishing link to stealthily build, authorize, and deploy an autonomous artificial intelligence AI agent inside a victim's organization. The vulnerability has bee...

Bing Images Flaws Let Crafted SVGs Run Commands as SYSTEM on Microsoft's Servers

A crafted SVG submitted to Bing's image search ran commands as NT AUTHORITY\SYSTEM on Microsoft's production image-processing workers, and as root on the Linux machines in the same fleet. XBOW's testing got the same result on workers across different hosts and network ranges, so the problem sat i...

Seeing AI Agents Is Not Enough. Security Teams Must Enforce What They Can Do

AI agent security is moving through a familiar maturity curve: adoption, then visibility, and finally, control. But what we've collectively discovered is that enforcing least privilege for AI agents is harder than we ever imagined. This is why there are so many approaches, from prompt filtering t...

Hacker Runs Hermes AI Agent Unattended for Post-Exploitation at Thai Finance Ministry

Someone installed a popular AI assistant on a rented server, switched off the setting that makes it ask permission before running risky commands, and pointed it at Thailand's Ministry of Finance, which runs the country's treasury and tax collection. The agent then worked through the ministry's...

Golden Chickens Resurfaces With Four New Malware Families and Modular Implants

The threat actors behind the Golden Chickens malware-as-a-service MaaS ecosystem have resurfaced with four new malware families, indicating that the operators are showing no signs of stopping despite extensive public disclosures into their inner workings. The malware families in question are:...

NodeBB Patches Eight AI-Found Flaws Exposing Admin Access and Private Chats

Eight security flaws in NodeBB went public on Wednesday, along with the code to exploit them. Aikido Security rates all eight as high severity and says its AI pentest agents found them in a six-hour review of the forum software's source code. Every version before 4.14.0 is affected. NodeBB has...

Kimi K3 Agents Found Redis Zero-Days and Built RCE Exploit, Researchers Say

Redis shipped seven security releases on July 23 after researchers published authenticated RCE PoCs for stock Redis 6.2.22, 7.4.9, 8.6.4, and 8.8.0. All four chains require RESTORE. The Streams chains also need EVAL and XGROUP; the 8.8.0 chain needs EVAL and the bundled RedisBloom module. Redis...

Fake Notepad++ Plugin Delivers MATCHBOIL.V2 in UAC-0099 Attacks

The Computer Emergency Response Team of Ukraine CERT-UA has warned of a new campaign that involves the use of a malicious program that's dressed up as a Notepad++ plugin to compromise Windows systems. The activity has been attributed by the agency to a threat cluster it tracks as UAC-0099 , a...

Russian Espionage Group Exploited Zimbra Zero-Day to Steal Mail and 2FA Codes

A Russian state-supported espionage group spent months reading Western mailboxes through a then-unknown flaw in Zimbra's webmail client. The payload goes after the last 90 days of email, the organization's entire email directory, the password saved in the browser and the codes kept for two-factor...

ThreatsDay: Android Spyware, PLC Attacks, AI Image Prompt Injection + 12 More Stories

Most of this week's trouble came dressed as something useful. A package stole data. A fake extension opened remote access. A safety app became spyware. An image gave hidden orders to an AI agent. Other threats hid in open systems, weak code, and normal network traffic. The threats change every...

Claude Cowork Flaw Could Let AI Agent Escape Its VM and Access Mac Files

Cybersecurity researchers have uncovered a sandbox escape vulnerability in Anthropic's Claude Cowork that makes it possible to break out of the confines of a Linux virtual machine VM within which the agent runs to read or write files anywhere on the Mac. Accomplish AI, which shared details of the...

Chaos Ransomware Uses msaRAT to Route C2 Traffic Through Headless Chrome and Edge

The Chaos ransomware group ran its command-and-control through the victim's own browser. Cisco Talos on Thursday detailed msaRAT, the Rust implant behind it, found on a compromised Windows machine ahead of the encryptor. The implant never opens an outbound connection of its own. Its process talks...