Attackers compromised the content-delivery network of Awesome Motive, one of the biggest WordPress plugin makers, and injected malicious JavaScript into files served for OptinMonster, TrustPulse, and PushEngage, plugins running on more than 1.2 million sites. Discovered by Sansec, the code only triggered when a logged-in WordPress administrator viewed an affected site, at which point it stole authentication tokens, created a hidden rogue admin account, and installed a self-concealing backdoor plugin that exposed a web shell. The bad files were served on June 12 to 14. Awesome Motive says attackers stole a CDN API key after breaching its marketing site, and has since rotated credentials.
The North Korean campaign known as Contagious Interview is still expanding its assault on software developers, now leaning on poisoned developer tools and fake job offers. Researchers at Proofpoint and Expel describe obfuscated malicious npm packages, published from throwaway accounts, that install the OtterCookie infostealer through a post-install script, alongside recruitment and code-review phishing lures. The group is using generative AI to build its malware loaders and to set up fake companies and LinkedIn profiles for social engineering. Expel says the operation stole $12 million in cryptocurrency in the first three months of 2026, draining more than 26,000 wallets from over 2,700 infected developer machines.
Attackers hijacked more than 400 packages in the Arch User Repository (AUR), the community add-on store for Arch Linux, in a supply-chain attack dubbed Atomic Arch. Rather than exploiting a flaw, they adopted abandoned packages and quietly edited the build recipe (PKGBUILD) to pull in a malicious npm package, atomic-lockfile, at install time. The payload is a Rust credential stealer that grabs browser logins, SSH keys, crypto wallets, and developer tokens; when run as root it also loads an eBPF rootkit that hides its processes, files, and network connections. Only the AUR is affected, not Arch's official repositories. The package names and histories looked completely normal.
Researchers at Cyera have disclosed six vulnerabilities, collectively named Proto6, in protobuf.js, a JavaScript and TypeScript library for Google's Protocol Buffers data format that sees more than 50 million downloads a week. The flaws stem from the library trusting schema and metadata by default, so a single malicious schema or crafted payload can crash a service, inject code, or lead to remote code execution. Cyera demonstrated real attacks including poisoning CI/CD pipelines to leak build secrets and crashing WhatsApp automation bots. Because protobuf.js is embedded across cloud services, AI platforms, and build systems, the reach is broad. Fixed versions are 7.5.6 and 8.0.2.
The ongoing Shai-Hulud supply-chain campaign has struck again, this time trojanizing 19 Python packages on PyPI, many of them popular bioinformatics tools like Dynamo, Spateo, CoolBox, and Napari-UFISH that have been downloaded hundreds of thousands of times. Discovered by Socket, the wave pushed 37 malicious package versions from what looks like a single compromised maintainer, each carrying code that steals developer secrets such as cloud keys and tokens, then uses them to spread further. PyPI has quarantined affected releases. The credential-stealing behavior and tactics match earlier Shai-Hulud activity tied to the group TeamPCP, whose worm code leaked publicly last month.
The self-spreading Miasma worm, a variant of the Shai-Hulud malware linked to the group TeamPCP, has reached Microsoft's own code. Using a stolen access token, attackers pushed a malicious commit into the Azure durabletask repository, and GitHub disabled 73 repositories across four Microsoft organizations including Azure and MicrosoftDocs. The twist: the planted code runs automatically when a developer opens the project in an AI coding assistant like Claude Code, Cursor, Gemini CLI, or VS Code, then harvests cloud and developer credentials and uses them to infect more projects. It hides the trigger inside a build file (binding.gyp) that most security tools ignore.
Toshiba and Muji have warned website visitors that suspicious sign-in screens appearing on their sites could harvest credentials, advising anyone who entered login data to change their passwords. The pop-ups were generated by the external polyfill[.]io service, which injected malicious code via its CDN after the domain was bought by a Chinese entity in 2024 - an incident that affected more than 100,000 websites. Japanese outlets report Zojirushi, FiNC Technologies, Ishiyaku Publishers, and Hobonichi were also hit, and a researcher observed Samsung Smart TVs and sites showing the prompt on June 1. Polyfill is a JavaScript compatibility CDN for legacy browsers; affected sites should remove all polyfill[.]io references immediately.
JFrog has documented IronWorm, a new npm supply-chain worm that has infected 36 packages with an infostealer targeting 86 environment variables and 20 credential files - including OpenAI, AWS, Anthropic, and npm credentials, Vault configs, SSH keys, and Exodus wallet files. Written in Rust, it hides behind an eBPF kernel rootkit and communicates over Tor. It self-propagates using stolen npm Trusted Publishing secrets to trojanize the victim's own packages. JFrog found the same commit names as Shai-Hulud (commit author 'claude,' timestamps faked up to 13 years old) and suspects an evolution of TeamPCP's payload. Notably, it exfiltrates secrets by uploading them as innocuous-looking GitHub Actions build artifacts, avoiding external C2.
The Windows version of the Chromium-based Hola Browser has been compromised in a supply-chain attack that delivered an undeclared cryptocurrency miner. The compromise was caught during AppEsteem certification checks, with Sophos and others finding an uncertified, unsigned, obfuscated executable, me.exe, under C:\Program Files\Hola\. Analysis identified it as a Monero miner: it adds a Windows Defender exclusion, copies itself to Program Files as HolaMonitorService.exe, creates an auto-starting service named hola_monitor_svc, and runs when the machine is idle. Hola - the Israeli company behind Hola VPN, long controversial for turning free users into proxies - confirmed the compromise (independently detected by Sygnia) but says only about 0.1% of users were affected.
More than 30 npm packages under Red Hat's @redhat-cloud-services namespace were backdoored in a supply-chain attack distributing a new Shai-Hulud variant dubbed 'Miasma.' Aikido and OX Security found dozens of package versions laced with malware that steals developer credentials, cloud secrets, SSH keys, and CI/CD tokens. Aikido says the compromised packages pull roughly 117,000 weekly downloads. Red Hat told BleepingComputer it removed the affected packages after becoming aware of the incident and that the compromise was limited to internal development tooling, with no impact on production products or services. The Miasma variant continues the self-propagating worm behavior that made the original Shai-Hulud campaign so disruptive.
TrustStrike Labs