CISA has expanded the scope of its alert on Iranian-affiliated hackers attacking critical infrastructure

The US Cybersecurity and Infrastructure Security Agency (CISA) has expanded the scope of its alert on Iranian-affiliated hackers attacking critical infrastructure, including water and energy facilities. The original advisory focused on programmable logic controllers (PLCs) manufactured by Rockwell Automation/Allen-Bradley. The update warns that the Read More …

Russian State-Supported Cyber Actors Conduct Phishing Campaign Targeting Users of Zimbra Collaboration Suite

A group of Russian state-supported cyber actors has been targeting and compromising various Western government and commercial organizations using the Zimbra Collaboration Suite (ZCS) software since at least July 2025. The Russian state supported advanced persistent threat (APT) group’s activity Read More …

Hugging Face confirms breach affected internal datasets and credentials

Hugging Face, a platform that hosts AI models and datasets, said its internal datasets and service credentials were compromised in a hack last week. The company disclosed the breach on Friday, but said it was still investigating whether any customer or Read More …

Ernst & Young reveals data breach following hack on support system

Ernst & Young (EY) has confirmed suffering a cyberattack in which it lost sensitive customer information, including tax data. In a data breach notification letter sent to affected individuals, the firm said that on April 23, 2026, it spotted “anomalous Read More …

HOLLOWGRAPH: Turning Microsoft 365 Calendars into Covert Command-and-Control Channels

The Group-IB Threat Intelligence team has identified HOLLOWGRAPH, a new malware sample that we attribute, with high confidence, to the Cavern backdoor framework. This malware is one component of a larger toolkit, and it uses the Microsoft Graph API through a Read More …

Healthcare giant Abbott probes two cyber incidents amid extortion claims

Abbott Laboratories, one of the world’s largest healthcare and medical device companies, is investigating two apparently unrelated cyber incidents after confirming unauthorized access to internal systems. While Abbott says there has been no impact on manufacturing, laboratory operations, or patient Read More …

Shark vacuum flaw exposes cameras, home maps and Wi-Fi passwords

Shark’s cloud-connected robot vacuums are currently exposed by an unpatched AWS (Amazon Web Services) IoT (Internet of Things) policy flaw that could turn one compromised device into a remote-control skeleton key for many others in the same region, with access Read More …