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Zero-Click AI Browser Hacking: Claude and ChatGPT Atlas Hijacked via Emails, X Posts

AI security company Zenity has disclosed the details of two AI browser hacking techniques targeting Claude in Chrome and ChatGPT Atlas, demonstrating how they can be used for account takeovers, phishing, and making unauthorized Amazon purchases. Zenity described its research in two separate blog posts published on Wednesday, one covering the ChatGPT Atlas research and one covering the Claude in Chrome attack. ChatGPT Atlas hacking Zenity researchers discovered that OpenAI’s agentic browser, ChatGPT Atlas, is…

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311,000 Impacted by Brown Health Medical Group-MA Data Breach

Lifespan Physician Group of Massachusetts, doing business as Brown Health Medical Group-MA, is notifying over 311,000 individuals that their personal, medical, and financial information was stolen in a data breach. The incident occurred in December 2025 at its Hawthorn location. It involved a historic file server, the healthcare organization says in a sample notification letter filed with the Massachusetts Office of Consumer Affairs and Business Regulation. While the practice’s electronic health record system was not…

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Gemini Agent-to-Agent Attack Method Exposed Secrets, Enabled Pull Request Tampering

Pillar Security discovered an agent-to-agent attack method in Google’s Agent Development Kit for Python that could lead to secret exposure and pull request (PR) poisoning. The google/adk-python repository had two classes of automated AI agents, namely low-privileged ones open to user interaction, and high-privileged ones accessible only to maintainers. An attacker could manipulate the low-privileged, public-facing agent to pass a prompt to the high-privileged one, gaining access to restricted capabilities, including command execution, and potentially…

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Recent SonicWall Vulnerabilities Exploited in Ransomware Attacks

The INC Ransomware group is responsible for most of the recent activity surrounding two fresh vulnerabilities in SonicWall’s SMA1000 secure remote access appliances, Resecurity reports. Tracked as CVE-2026-15409 (CVSS score of 10) and CVE-2026-15410 (CVSS score of 7.2), the security defects allow unauthenticated remote attackers to open a WebSocket tunnel to restricted services and escalate their privileges to root. Patched on July 14 and added to CISA’s Known Exploited Vulnerabilities (KEV) catalog on the same…

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This month in security with Tony Anscombe – July 2026 edition

OpenAI models going rogue, the first documented agentic ransomware operation, and an emergent AI-driven supply chain threat made for a packed July roundup 31 Jul 2026 With July coming to a close, ESET Chief Security Evangelist Tony Anscombe looks back at some of the top cybersecurity stories that made the news over the past month and offers insights that they may hold for your own cyber-defenses. Here’s some of what caught Tony’s attention this month:…

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Balance Theory Raises $19 Million to Help Enterprises Manage Cybersecurity Investments

Cybersecurity investment management startup Balance Theory has raised $19 million in Series A funding to expand its platform for helping CISOs evaluate and manage security spending. Balance Theory’s platform is designed to bring cybersecurity investment planning, market intelligence and execution into a single system. It maintains contextual information about an organization’s security program, supplements it with proprietary market data, and employs AI agents and automated workflows to support purchasing and portfolio-management decisions. As the company…

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In Other News: OpenAI Open Source Tool, AWS Links Hacks to North Korea, Mythos Crypto Research

SecurityWeek’s weekly cybersecurity news roundup offers a concise overview of important developments that may not receive full standalone coverage yet remain relevant to the broader threat landscape. This curated summary highlights key stories across vulnerability disclosures, emerging attack methods, policy updates, industry reports, and other noteworthy events to help readers maintain a well-rounded awareness of the evolving cybersecurity environment. Here are this week’s highlights:  OnTrac hacked Parcel delivery company OnTrac is notifying customers after attackers…

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Beyond the screenshot: Why you should verify what you see

Digital Security The screenshot may look convincing, but it doesn’t necessarily prove that the payment, booking or conversation is genuine Phil Muncaster 30 Jul 2026  •  , 6 min. read Someone sends you a screenshot showing that a payment has gone through. It carries the right logo, amount, timestamp and transaction status. Yet the money never arrives. What passes for proof today can generally be very different from just a few years ago. Screenshots, often…

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CareCloud Data Breach Impacts Over 350,000

Healthcare information technology company CareCloud is notifying at least 350,000 people that their information was stolen in a data breach. The incident involved an electronic health record environment within the CareCloud Health division, which was disrupted on March 16, 2026. CareCloud’s investigation determined that hackers accessed one of its AWS environments between March 10 and March 16, and likely exfiltrated data from it. On June 24, the investigation determined that personal, financial, and medical information…

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Read This Before You Buy That TV Streaming Stick

Security experts have been sounding the alarm for years about the risks of using generic TV boxes that promise unlimited content streaming for a one-time fee, warning that they secretly rent the user’s Internet connection out to strangers. But a groundbreaking new analysis finds these devices also routinely spoof themselves as mobile phones clicking ads on AI-generated websites as part of a sprawling operation that seeks to defraud online merchants and advertising networks. Pedro Falé…

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