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// AI-powered summary generated at 20:00

> Infosec News Nuggets — August 5, 2026
Claude Mythos 5 Tried to Backdoor a Real Open-Source Project in Testing, Then Vouched for Itself  The UK’s AI Security Institute disclosed that an agent running Anthropic’s Claude Mythos 5 spent 34 hours during a routine cyber evaluation trying to get a malware dropper merged into a real, public ope...
> AI agent deception moves from theory to reality in UK cyber tests
“During a routine cyber evaluation, AI agents took sustained, unsanctioned action directed at real people and organisations,” UK’s AI Security Institute (AISI) disclosed on Tuesday. The agents’ actions included an attempted supply-chain attack that saw them create malicious pull requests and try to...
> Critical Paperclip bugs expose AI agent trust failures
Security researchers are warning against trust assumptions in AI security with newly detailed flaws affecting the open-source AI agent platform Paperclip that could be chained into remote code execution (RCE), data exposure, and developer-machine compromise. An Oasis Securi...
> Kali365 Weaponizes Microsoft Authentication Against US Companies: New Enterprise Risk
Kali365 is turning a legitimate Microsoft login into a gateway to corporate data. The phishing kit targets US organizations with attacker-controlled device codes that victims approve on Microsoft's real authentication page. Once access and refresh tokens are issued, attackers may retain access to e...
> New OVSwrap Linux Kernel Flaw Lets Local Users Gain Root via Open vSwitch
A memory corruption flaw in the Linux kernel's Open vSwitch datapath gives ordinary local users a path to root on a broad set of default-configured distributions, and a public exploit ships with pre-built records for roughly 800 kernel builds. The vulnerability, tracked as CVE-2026-64531 (CVSS scor...
> OpenAI, Anthropic AI agents resorted to deception in new cybersecurity incidents
OpenAI’s GPT-5.6 Sol and Anthropic’s Mythos 5 have been implicated in another series of AI security incidents after the models created fake online identities, targeted real people, and attempted to manipulate developers into approving malicious code during controlled cyber eva...
> 311,000 Impacted by Brown Health Medical Group-MA Data Breach
Hackers stole personal information, medical records, and financial information from the organization’s server. The post 311,000 Impacted by Brown Health Medical Group-MA Data Breach appeared first on SecurityWeek.
> Code review used to be the only way to catch these bugs
An automated system called NOVA read the source code of 3,915 open-source projects over two months and came back with 14,090 vulnerabilities, each one confirmed through the system’s validation pipeline. Vulnerability researchers at Palo Alto Networks’ Unit 42 built the system and checked its output...
> Google’s synchronized passkeys can be stolen in ‘Pass‑ta‑key’ attacks
Over time, passkeys are supposed to replace passwords. But what happens when malware steals the master key?
> Cybersecurity Alliance Drafts SAFE Guidelines for Sharing AI Incident Data 
The guidelines are the work of the recently launched Open Secure AI Alliance, which now includes 120 organizations. The post Cybersecurity Alliance Drafts SAFE Guidelines for Sharing AI Incident Data  appeared first on SecurityWeek.
> UK charities count the cost of Beacon CRM cyberattack
Database backups likely stolen, potentially exposing donor, supporter, and service user details
> Critical Gitea Flaw Let Unauthenticated Attackers Read Server Files via Org-Mode Markup
An unauthenticated attacker can read any file the service account can access on Gitea, the self-hosted Git platform, in versions 1.22.1 through 1.27.0. No login, no repository write access. A public repository and crafted Org-mode markup are enough. The flaw is fixed in Gitea 1.27.1. The file-read...
> A few notes on AWS Nitro Enclaves: KMS integration
Nitro Enclaves and Key Management Service (KMS) feel like a natural fit: since the KMS can verify attestation documents generated by the enclaves, developers can offload key management tasks from their applications to the AWS-managed service. But integrating an external service with your trusted enc...
> Prompt Injection Remains Biggest LLM Risk, Despite Limited Incidents
Prompt injection remains the most dangerous security threat to LLMs, according to OWASP’s latest Top 10 LLM Applications list
> Leaked n8n API Tokens Exposed Live Instances to Credential Theft
GitGuardian researchers found 321 n8n instances accepting API tokens exposed in public GitHub commits and demonstrated four ways attackers could use them to access sensitive data and downstream credentials without exploiting a software vulnerability. We scanned public GitHub commits for exposed n8n...
> AI Security Institute Reports Anthropic and OpenAI Models Going Rogue Against Organizations
In one instance, an unsanctioned model attempted to inject malicious code into an open source repository. The post AI Security Institute Reports Anthropic and OpenAI Models Going Rogue Against Organizations appeared first on SecurityWeek.
> One C2 kit. 30 customers. 2 governments
I was mapping the command-and-control infrastructure behind a state-linked intrusion set when the query came back and effectively ended the exercise I thought I was running. The malware resolved its C2 address by reading a smart contract on a public blockchain. Public repor...
> ChainDrop Worm Hits 400+ npm Packages with Two Billion Monthly Installs
A new npm worm has compromised packages with over two billion monthly installs
> CISA Warns of Exploited Langflow, N-central, and Tomcat Vulnerabilities
The flaws can be exploited for remote code execution, authentication bypass, and EncryptInterceptor bypass. The post CISA Warns of Exploited Langflow, N-central, and Tomcat Vulnerabilities appeared first on SecurityWeek.
> Vulnerabilities in Car Anti-Theft Device
This is disturbing: …a team of security researchers at UC San Diego, who found that a model of aftermarket car alarm known as the KARR Security System, installed in more than 2 million vehicles across the US by their estimate, can let any hacker within Bluetooth range send radio commands to silently...