Latest cybersecurity reporting from selected sources.

GitHub is moving to strengthen software supply chain security by updating "actions/checkout" to block pwn request attacks that exploit the risky use of the "pull_request_target workflow" trigger to run malicious code with the workflow's full privileges

GitHub has announced what it said are "breaking changes" coming to npm version 12, one of which turns off install scripts by default to combat software supply chain threats

A security researcher found a flaw in Anthropic's Claude Code GitHub Action that let an attacker take over vulnerable public repositories running it, with nothing more than a single opened GitHub issue. Because Anthropic's own action repo used the same workflow, a working attack could have pushed malicious code into the action itself and onto the projects downstream that pull it

A large-scale npm supply chain attack compromised over 90 versions of @redhat-cloud-services packages, silently infecting CI/CD environments and developer systems. The malicious code steals credentials from GitHub, cloud platforms, and local machines, then spreads like a worm by republishing trusted packages. Discover how the attack works, what data is at risk, and the steps you can take to protect your organization. The post Preinstall to persistence: Inside the Red Hat npm Miasma credential-stealing campaign appeared first on Microsoft Security Blog.

A supply chain attack targeting the Laravel Lang localization packages has exposed developers to a sophisticated credential-stealing malware campaign after attackers abused GitHub version tags to distribute malicious code through Composer packages. [...]

A new "coordinated" supply chain attack campaign has impacted eight packages on Packagist including malicious code designed to run a Linux binary retrieved from a GitHub Releases URL

In yet another software supply chain attack, threat actors have compromised the popular GitHub Actions workflow, actions-cool/issues-helper, to run malicious code that harvests sensitive credentials and exfiltrates them to an attacker-controlled server

Cybersecurity researchers have disclosed details of a malicious Go module that's designed to harvest passwords, create persistent access via SSH, and deliver a Linux backdoor named Rekoobe

In December 2024, the popular Ultralytics AI library was compromised, installing malicious code that hijacked system resources for cryptocurrency mining. In August 2025, malicious Nx packages leaked 2,349 GitHub, cloud, and AI credentials. Throughout 2024, ChatGPT vulnerabilities allowed unauthorized extraction of user data from AI memory

JavaScript Repository Contends With Wormable Malicious CodeAn apparent "Dune" aficionado is responsible for the first self-propagating attack on the npm JavaScript repository in what one security company has called one of the most severe JavaScript supply-chain attacks so far. A malicious script exfiltrated data to GitHub repositories named "Shai-Hulud."

Malicious code lurking in over 5,000 downloads, says Socket researcher Developer freelancing platform Toptal has been inadvertently spreading malicious code after attackers broke into its systems and began distributing malware through developer accounts.…

Someone went to great lengths to prey on the next generation of cybercrooks Sophos thinks a single person or group called "ischhfd83" is behind more than a hundred backdoored malware variants targeting novice cybercriminals and video game cheaters looking to get their hands on malicious code.…

Sophos has uncovered a scheme planting malicious code in 130+ GitHub repositories, targeting hackers and gamers

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Tuesday added a vulnerability linked to the supply chain compromise of the GitHub Action, tj-actions/changed-files, to its Known Exploited Vulnerabilities (KEV) catalog

Malicious Code Injected in reviewdog Just Hours Before tj-actions BackdooredJust days after researchers discovered an attack that subverted a widely used tool for software development platform GitHub, they discovered a second, prior attack, as part of what one expert said may be "a chain of supply chain attacks eventually leading to a specific high-value target."

Cybersecurity researchers have disclosed details of a new supply chain attack vector dubbed Rules File Backdoor that affects artificial intelligence (AI)-powered code editors like GitHub Copilot and Cursor, causing them to inject malicious code

Over 23,000 Code Repositories at Risk After Malicious Code Added to GitHub ActionAttackers subverted a widely used tool for software development environment GitHub, potentially allowing them to steal secrets from thousands of private code repositories as well as compromise other, widely used "open source libraries, binaries and artifacts" that use the tool, experts warned.

Cybersecurity researchers have discovered a new malicious Python package that masquerades as a cryptocurrency trading tool but harbors functionality designed to steal sensitive data and drain assets from victims' crypto wallets

Threat actors have long leveraged typosquatting as a means to trick unsuspecting users into visiting malicious websites or downloading booby-trapped software and packages

ICSpector Is Now on GitHub, Scans PLCs, Extracts Info and Detects Malicious CodeMicrosoft has released a new open-source security tool to close gaps in threat analysis for industrial control systems and help address increased nation-state attacks on critical infrastructure. ICSpector, available on GitHub, can scan PLCs, extract information and detect malicious code.