Hackers compromised the maintainer account behind the widely used Rust crate arrayref to introduce malware that executed on developers’ systems during compilation. Within a 23-minute window, the attacker also poisoned two other crates, append-only-vec and internment, in the same supply-chain attack. The arrayref crate is a popular Rust library with more than 53 million downloads over the past 90 days that is used by cryptography, graphics, and blockchain tools. A report from application security company StepSecurity notes that the malicious Rust crate releases were arrayref 0.3.10, append-only-vec 0.1.9, and internment 0.8.7, all maintained by the same account. The hacker injected a dependency on a package called proc-macro1, a typosquat impersonating the popular proc-macro2 crate, while retaining the rest of the upstream source code completely unchanged.
AI is making phishing attacks more personalized, convincing, and difficult for traditional email filters to detect. Kaseya explains how MSPs can monitor identity, email, and endpoint activity to detect and contain attacks that make it past the inbox.
The Cybersecurity and Infrastructure Security Agency (CISA) warned federal agencies that threat actors are now exploiting a critical MLflow vulnerability. MLflow is an open-source AI engineering platform for large language models (LLMs) and agents backed by the Linux Foundation, with over 30 million monthly downloads, used by thousands of organizations to debug, evaluate, optimize, and monitor AI applications. Tracked as CVE-2026-64849, this critical DNS-rebinding server-side request forgery (SSRF) bypass in MLflow's outbound webhook delivery was patched in version 3.15.0 and can be used by attackers without privileges to remotely access internal services or cloud metadata configurations on unpatched instances. "The default MLflow Tracking Server (mlflow server, no authentication, default SQLite backend) exposes the model-registry webhooks API unauthenticated, including a synchronous POST /api/2.0/mlflow/webhooks/{id}/test endpoint that returns the upstream response status and body to the caller," MLflow's security team says in a security advisory issued three weeks ago.
Unit 42 details how attackers exploit enterprise collaboration tools for identity phishing and credential theft. Discover key defense strategies. The post Identity Abuse Through Trusted Communication Channels appeared first on Unit 42.
CERT Polska, the Polish Computer Emergency Response Team (CERT), warned that attackers have begun exploiting a critical vulnerability in Zimbra Collaboration Suite (ZCS). ZCS is a popular email and collaboration software suite used by hundreds of millions of people and organizations worldwide, including thousands of businesses and hundreds of government agencies. The Zimbra security team released version 10.1.20 on July 20 to patch the vulnerability (tracked as CVE-2026-73570), which allows unauthenticated attackers to gain remote code execution by exploiting a command injection weakness in the SNMP monitoring component when SNMP notifications are enabled. "Due to improper sanitization of untrusted input during SNMP notification processing, an unauthenticated attacker can send specially crafted SMTP requests that may result in execution of arbitrary operating system commands as the Zimbra user," it explained.
Microsoft is investigating a potential issue with the August 2026 updates that may prevent some games from launching or cause them to crash on affected Windows 11 systems. The confirmation follows user reports that a limited number of games, including ARC Raiders, MARVEL Tōkon: Fighting Souls, and The Finals, become unresponsive on devices running Windows 11, version 25H2, and Windows 11, version 24H2. The complete list of symptoms users are experiencing on impacted systems includes: "Following the release of Windows updates on August 11, 2026 (KB5121003) and later, Microsoft received reports of issues involving inability to run games as expected," Microsoft said in a Windows release health dashboard update on Wednesday. "We are presently investigating to determine if this is an issue caused by Microsoft. We will provide an update when more information is available."
ChatGPT is experiencing a major outage, and users are unable to sign in, create accounts, or load chats, including previous conversations. The outage started at approximately 8 PM ET on Wednesday, August 19, and is affecting users worldwide, including those in the US and Europe. If you are affected, ChatGPT will get stuck at loading animations for the sidebar, and you won't be able to send messages due to "too many concurrent requests" errors. New signups and logins on chatgpt.com are also failing. This outage also affects OpenAI's coding platform, Codex. Thankfully, OpenAI is aware of these issues and has already acknowledged them on the status page. OpenAI says it has identified that users are running into login issues across the impacted services, and that it is "working on implementing a mitigation."
The Rust Project has deleted malicious versions of three widely used Rust crates from crates.io after a compromised maintainer account published releases that added a typosquatted dependency whose build script downloaded and executed a remote payload during compilation. The affected releases are arrayref 0.3.10, internment 0.8.7, and append-only-vec 0.1.9, all published from the same owner
Three distinct suspected Russian cyber espionage threat clusters have been observed leveraging legitimate authentication flows to single out individuals working in academia, aerospace and defense, governments, and think tanks across Europe, as well as academia and think tanks within the U.S. These clusters include UNC6293, UNC7005, and UNC5976. "These clusters engage in persistent, adaptive
A lot of this week’s trouble starts with something trusted doing exactly what it was allowed to do. Signed drivers get turned against defenses. Legitimate apps help malware blend in. A weak header check opens a path to code execution. Elsewhere, exposed systems, old bugs, odd hiding tricks, and AI-assisted exploit research keep lowering the effort needed to cause damage. Nothing here needs
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