Anthropic Launches Project Glasswing Based on Claude Mythos
Anthropic Launches Project Glasswing Based on Claude Mythos
Anthropic has launched Project Glasswing based on Claude Mythos. It is an initiative which uses AI to identify and remediate undiscovered cybersecurity vulnerabilities in critical software. The company described the model as the “most capable yet for coding and agentic tasks” and that it can “deeply understand and modify complex software,” allowing Claude Mythos Preview to autonomously find and fix cybersecurity vulnerabilities at scale. In testing, the model discovered thousands of zero-day vulnerabilities which had not previously been identified.
Source: Infosecurity Magazine
OpenAI Unveils GPT-5.4-Cyber
OpenAI on Tuesday unveiled GPT-5.4-Cyber, a variant of its latest flagship model fine-tuned specifically for defensive cybersecurity work, following rival Anthropic’s announcement of frontier AI model Mythos. OpenAI said that GPT-5.4-Cyber will initially be rolled out on a limited basis to vetted security vendors, organizations and researchers because of its more permissive design.
Source: Reuters
CSA Urges CISOs to Become “Mythos-Ready”
The Cloud Security Alliance (CSA) has issued a critical warning urging CISOs to prepare for “Mythos-ready” security to counter rapidly accelerating AI-driven threats. The report emphasizes that traditional defense timelines are obsolete as autonomous AI agents begin orchestrating complex, multi-stage attacks at machine speed. To remain resilient, the CSA advises organizations to shift toward AI-integrated security operations and robust governance frameworks, ensuring that defensive capabilities evolve as quickly as the adversarial AI models they are designed to stop.
Source: Security Week
Cybersecurity Stock Falls Due to Anthropic’s Mythos
Information security and software stocks fell on Friday as traders fretted over Anthropic’s advanced AI model, in the latest slide sparked by worries new tools will upend a wide range of sectors. Concerns have mounted all week across the software industry after Anthropic announced that its latest AI model, Mythos, was able to detect critical vulnerabilities in code that extensive testing had previously missed.
Source: Financial Times
Penta Security Wins Three Categories at the 2026 Globee® Cybersecurity Awards
Penta Security has been recognized with three Silver awards at the 2026 Globee® Awards for Cybersecurity, spanning the categories of Data Security, Web Application Firewall (WAF), and Security as a Service (SECaaS) Solution. This recognition adds to Penta Security’s growing track record on the global awards stage. The Globee Awards organization noted that Penta Security’s wins reflect performance and innovation that surpasses industry benchmarks.
Source: AP News
Rockstar Games Under Data Breach by ShinyHunters
Rockstar Games has suffered a data breach linked to a recent security incident at Anodot, with the ShinyHunters extortion gang now leaking the stolen data on its data leak site. The threat actors claim the data was taken from Snowflake environments using authentication tokens stolen during a recent Anodot security incident. The leaked data includes in-game revenue and purchase metrics, player behavior tracking, and game economy data for Grand Theft Auto Online and Red Dead Online. The datasets also appear to contain customer support analytics for the company’s Zendesk support instance.
Source: Bleeping Computer
Booking.com Under Data Breach
Booking.com has suffered a data breach with “unauthorised parties” gaining access to customers’ details. Booking.com declined to say how many people the hack had affected. A spokesperson said that “financial information was not accessed”. Attackers could access information including booking details and names, emails, addresses, phone numbers associated with the booking and anything that has been shared with the accommodation.
Source: TechCrunch
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