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Attackers Use LLM Agent for Post-Exploitation After Marimo CVE-2026-39987 Exploit 2026-05-29 at 21:23 By An unknown threat actor has been observed using a large language model (LLM) agent to conduct post-compromise actions after obtaining initial access following the exploitation of a publicly-accessible Marimo network using a recently disclosed vulnerability. “The attacker compromised an internet-reachable Marimo […]

New Russian-Linked GREYVIBE Targets Ukraine with AI-Powered Cyberattacks 2026-05-29 at 18:31 By A previously undocumented threat actor dubbed GREYVIBE has been attributed to ongoing and persistent attacks targeting Ukraine and Ukraine-related entities since at least August 2025. GREYVIBE, per WithSecure, is assessed to be a Russian-speaking group operating broadly in the Russian time zone, with

What 2,000 Exposed Vibe-Coded Apps Reveal About the Limits of Most Security Stacks 2026-05-29 at 18:31 By Shadow AI used to mean employees pasting things they shouldn’t into ChatGPT. It now means something bigger: employees building full applications with AI, wiring them into production systems, and publishing them on the open internet. Without Security or

Risks of Robinhood Using AI Agents to Trade, Make Purchases 2026-05-29 at 18:00 By Robinhood is enabling AI agents to trade and make credit card purchases on behalf of users.  This article is an excerpt from Subscribe to Security Magazine’s RSS Feed View Original Source

Malicious Sicoob NuGet Steals Banking Credentials as npm Packages Target Cloud Secrets 2026-05-29 at 14:08 By Cybersecurity researchers have discovered a malicious NuGet package that masquerades as a C# software development kit for Sicoob, one of Brazil’s largest cooperative financial systems, to siphon client IDs and PFX certificates. According to Socket, versions 2.0.0 through 2.0.4

From the Hammer to the Scalpel: The Evolution of Account Takeover 2026-05-29 at 12:43 By Fraudsters stopped storming the gates and started forging credentials to walk through the front door. Yet, many defenders are still manning the walls. This article is an excerpt from Subscribe to Security Magazine’s RSS Feed View Original Source

Kimsuky Deploys HTTPSpy, Expands Arsenal with HelloDoor and VS Code Tunnels 2026-05-29 at 12:43 By The North Korean state-sponsored threat actor known as Kimsuky (aka Velvet Chollima) has been attributed to a fresh set of cyber attacks targeting South Korean military and corporate entities through March and April 2026. “Kimsuky employed a range of tailored

With nearly $1 trillion valuation, Anthropic dethrones OpenAI as most valuable AI company 2026-05-29 at 06:17 By Marc Vartabedian Anthropic is now the artificial intelligence king in Silicon Valley – unseating rival OpenAI as the most valuable AI company after a new whopping $965 billion valuation.  The AI giant said Thursday it inked a $65

Brutal bloodbath at California tech startup Webflow as staff locked out without warning 2026-05-29 at 00:51 By Benjamin Brown Website building and hosting platform Webflow is just the latest victim of Artificial Intelligence that has wreaked havoc on California tech industry — making the shocking announcement Wednesday that many of its employees will be laid

Wearable ultrasound patch can monitor high-risk pregnancies round the clock 2026-05-28 at 21:31 By Reda Wigle For decades, ultrasounds have been the primary means of fetal monitoring. This article is an excerpt from Latest Technology News | New York Post View Original Source

Critical Gogs RCE Vulnerability Lets Any Authenticated User Execute Arbitrary Code 2026-05-28 at 21:31 By A critical security vulnerability has been disclosed in Gogs, a popular open-source self-hosted Git service, that allows an authenticated user to execute arbitrary code under certain conditions. The security flaw, per Rapid7, is rated 9.4 on the CVSS scoring system.

Nvidia’s Jensen Huang joins advisory board of China’s prestigious Tsinghua University: report 2026-05-28 at 20:24 By Thomas Barrabi Outgoing Apple CEO Tim Cook serves as chairman of the advisory board, members of which also include SpaceX boss Elon Musk, Meta chief Mark Zuckerberg, Microsoft’s Satya Nadella and JPMorgan CEO Jamie Dimon. This article is an

As Summer Closes In, the Travel Sector Is Unprepared 2026-05-28 at 20:24 By In the last 12 months, 92% of agencies experienced some form of cyber threat. Yet, only 20% plan to establish an incident response plan.  This article is an excerpt from Subscribe to Security Magazine’s RSS Feed View Original Source

Threat Actors Exploit Critical FortiClient EMS Flaw to Deploy Credential Stealer 2026-05-28 at 20:24 By Threat actors are continuing to exploit a critical, now-patched security flaw impacting FortiClient Endpoint Management Server (EMS) deployments to deliver credential-stealing malware. “The campaign abused trusted endpoint management infrastructure to deliver malware across managed endpoints,” Arctic Wolf said. “Threat actors

FBI sounds alarm on phishing tool that steals Microsoft 365 accounts without passwords 2026-05-28 at 18:42 By Ariel Zilber The feds say that Kali365 makes it easy for even amateur hackers to run advanced phishing scams that used to require serious technical skills. This article is an excerpt from Latest Technology News | New York

AI Agent Conducted a Cyberattack on Its Own — It Took Less Than One Hour 2026-05-28 at 18:27 By Security magazine speaks to a researcher about an observed cyberattack driven entirely by AI.  This article is an excerpt from Subscribe to Security Magazine’s RSS Feed View Original Source

6M Impacted by Carnival Cruise Data Breach 2026-05-28 at 17:30 By The incident was caused by a social engineering attack targeting an employee device.  This article is an excerpt from Subscribe to Security Magazine’s RSS Feed View Original Source

New AI Usage Report: Enterprise AI Risk Is Heavily Concentrated Among a Small Group of AI “Power users” 2026-05-28 at 17:22 By State of AI Usage Report 2026 (full report here) by LayerX Security reveals the extent of the enterprise AI visibility gap and why most organizations still don’t understand where their AI exposure is

Microsoft Slams Public Zero-Day Disclosures Amid GitHub Researcher Account Removal 2026-05-28 at 16:53 By Microsoft has come out strongly in favor of Coordinated Vulnerability Disclosure (CVD), urging the research community to share their findings and give affected vendors an opportunity to better understand the impact and address them before they are publicly disclosed. The development

ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More 2026-05-28 at 16:33 By Every time you think the industry has finally stopped doing some reckless, low-effort crap, somebody spins up a fresh box full of sketchy loaders, fake installers, recycled social-engineering bait, and enough exposed infrastructure to make you wonder