Latest cybersecurity reporting from selected sources.

Microsoft has found a malicious Chrome extension that posed as the AI search engine Perplexity and quietly logged what people searched for. It routed every query and every character typed into the address bar through an attacker-controlled server before redirecting users to real results

Also, France Probes Tchap Breach, M&S Cancels Bonuses, June Patch TuesdayThis week, CISA tightened patching rules, hackers provoked AI scanners. An accused Russian intel hacker appeared in court. Microsoft warned of AI-themed attacks. M&S canceled bonuses. France probed a Tchap breach. NHS trusts disclosed stolen data and a Telegram campaign targeted Russian troops.

Microsoft Threat Intelligence identified a prompt injection pathway in Claude Code GitHub Action that allowed access to workflow secrets under specific conditions. This research examines the attack chain, responsible disclosure process, Anthropic's mitigation, and guidance for securing AI-powered CI/CD workflows. The post Securing CI/CD in an agentic world: Claude Code Github action case appeared first on Microsoft Security Blog.

A vulnerability in GitHub Codespaces could have been exploited by bad actors to seize control of repositories by injecting malicious Copilot instructions in a GitHub issue

Cybersecurity researchers have disclosed that artificial intelligence (AI) assistants that support web browsing or URL fetching capabilities can be turned into stealthy command-and-control (C2) relays, a technique that could allow attackers to blend into legitimate enterprise communications and evade detection

Cybersecurity researchers have disclosed details of a new attack method dubbed Reprompt that could allow bad actors to exfiltrate sensitive data from artificial intelligence (AI) chatbots like Microsoft Copilot in a single click, while bypassing enterprise security controls entirely

Cybersecurity researchers have disclosed details of a new fully-featured Windows backdoor called NANOREMOTE that uses the Google Drive API for command-and-control (C2) purposes

Microsoft has disclosed details of a novel side-channel attack targeting remote language models that could enable a passive adversary with capabilities to observe network traffic to glean details about model conversation topics despite encryption protections under certain circumstances

Microsoft has disclosed details of a novel backdoor dubbed SesameOp that uses OpenAI Assistants Application Programming Interface (API) for command-and-control (C2) communications

A newly disclosed set of security flaws in NVIDIA's Triton Inference Server for Windows and Linux, an open-source platform for running artificial intelligence (AI) models at scale, could be exploited to take over susceptible servers

Cybersecurity researchers have disclosed details of a now-patched vulnerability impacting the Microsoft SharePoint connector on Power Platform that, if successfully exploited, could allow threat actors to harvest a user's credentials and stage follow-on attacks

Hackers Used LLMs to Perform Tasks That Non-AI Tools Can PerformNation-state hackers including Russian military intelligence and hackers backed by China have used OpenAI large language models for research and to craft phishing emails, the artificial intelligence company disclosed Tuesday in conjunction with major financial backer Microsoft.

Computing Giant Says Hackers Did Not Access Customer Data or Production SystemsRussian state hackers obtained access to the inboxes of senior Microsoft executives for at least six weeks, the computing giant disclosed late Friday afternoon. "There is no evidence that the threat actor had any access to customer environments, production systems, source code, or AI systems."

Computing Giant Says Hackers Did Not Access Customer Data or Production SystemsRussian state hackers obtained access to the inboxes of senior Microsoft executives for at least six weeks, the computing giant disclosed late Friday afternoon. "There is no evidence that the threat actor had any access to customer environments, production systems, source code, or AI systems."

Three new security flaws have been disclosed in Microsoft Azure API Management service that could be abused by malicious actors to gain access to sensitive information or backend services