Data Breaches
McKesson has confirmed an incident and almost nothing else. The 284 million figure is ShinyHunters' claim, it counts database rows rather than people, and this same group's numbers were cut roughly in half the last time anyone checked them.
Artificial Intelligence (AI)
The actor was caught by its own AI agent. Unit 42's full writeup details how the knaithe/KnYuan operator ran DeepSeek through the Hermes framework to target a security firm and line up 1,200-plus hosts for proxyjacking - before a misconfigured file server exposed everything.
Ransomware
Another named RaaS operator profile from PRODAFT — defender-team pattern-tracking this weekend.
Nation-State Cyber Threats
Seqrite Labs says the Pakistan-aligned group SideCopy likely ran Operation XENOFISCAL, a spear-phishing campaign that hit Afghanistan's Ministry of Finance and provincial finance offices with the open-source Xeno RAT, delivered through a Pashto-language ZIP-and-LNK lure.
Supply Chain Attack
A compromised Red Hat employee GitHub account pushed a new 'Miasma' build of the Mini Shai-Hulud worm into 32 Cloud Services npm packages. Red Hat says the code was internal-only and never reached customers; any pipeline that installed a poisoned version should rotate its secrets.
Malware
Unit 42 documented Operation FlutterBridge, a macOS malvertising campaign that uses hundreds of Google-verified ads to drop FlutterShell — a new backdoor built with Google's Flutter framework that adds shell execution, file manipulation and AI-summarization-based exfiltration to adware.
Supply Chain Attack
The npm package codexui-android, a remote web UI for OpenAI Codex with 29,000 weekly downloads, has been exfiltrating users' Codex authentication tokens to an attacker server for the past month. The package is still live on npm.
Supply Chain Attack
Microsoft Threat Intelligence has named a new npm supply-chain wave the Mini Shai-Hulud campaign. A single maintainer alias, vpmdhaj, published 14 typosquatted packages in four hours that harvest AWS, HashiCorp Vault, npm, and GitHub Actions secrets from CI/CD runners.
Supply Chain Attack
Microsoft Threat Intelligence disclosed 33 malicious npm packages published under three aliases attributed to a single operator. The packages abuse dependency confusion to fingerprint developer and build environments and ship a server-toggled reconnaissance payload.
Ransomware
Microsoft Threat Intelligence has named the operators of The Gentlemen ransomware Storm-2697, and its new deep technical analysis dissects a Go encryptor that uses per-file ephemeral keys and an aggressive self-propagation module.
Data Breaches
Carnival Corporation began notifying 5,995,277 people on May 27, 2026 that their personal data was stolen in an April vishing breach — the corporate confirmation of an extortion claim ShinyHunters posted to its leak site 38 days earlier.
Threat Actors
Wiz disclosed JINX-0164, a previously unreported actor running LinkedIn recruiter lures, custom macOS malware, and CI/CD hijacking against cryptocurrency developers. The playbook mirrors documented North Korean tradecraft, but Wiz preserves the attribution hedge.