Latest cybersecurity reporting from selected sources.

Cybersecurity researchers have disclosed details of a now-patched critical session isolation vulnerability in Writer, an enterprise generative artificial intelligence (AI) platform, that could result in cross-tenant compromise

Pro-Iran group Handala breached Cal Water via an exposed GPS tool, reaching billing data for 2M customers. 5GB leaked. On June 11, 2026, the Iran-linked threat group Handala posted a claim on its blog that it had compromised California Water Service, known as Cal Water, and published a 5GB proof-of-concept data dump to back it […]

Blames outfit called Context.ai, which reckons an agentic OAuth tangle caused the incident Vercel, the company that created the open source Next.js web development framework, has a data leak that led to compromise of some customer credentials, and blamed an outfit called Context.ai for the mess.…

Anthropic's Mythos Leak Points to Pattern of Failures, Sloppy Practices at AI LabsAnthropic accidentally exposed its most powerful unreleased AI model to compromise, and days later shipped its flagship coding tool's full source code without meaning to. Meta, Microsoft and OpenAI have each had comparable moments. Questions linger about the integrity of third-party AI tools.

Fashion brand latest to succumb to ShinyHunters' tricks Canada Goose says an advertised breach of 600,000 records is an old raid and there are no signs of a recent compromise.…

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

Cybercrime Gang Rhysida Still Lists the Practice on Its Leak Site Among Its VictimsA Kansas medical group will pay $1.2 million to settle proposed class action litigation involving an attack that compromised the sensitive data of nearly 256,000 individuals. The Rhysida ransomware operation claimed responsibility and said it stole 3 terabytes.

Spanish flag carrier Iberia has begun notifying customers of a data security incident stemming from a compromise at one of its suppliers. The disclosure comes days after a threat actor claimed on hacker forums to have access to 77 GB of data allegedly stolen from the airline. [...]

Envoy Air, a regional airline carrier owned by American Airlines, confirms that data was compromised from its Oracle E-Business Suite application after the Clop extortion gang listed American Airlines on its data leak site. [...]

Medusa Group Tied to Attack on SimonMed and Threats to Leak Stolen DataTwo radiology practices are notifying nearly 1.5 million people of separate hacking incidents compromising their sensitive health information. Cybercrime gang Medusa claimed credit for attacking Arizona-based SimonMed Imaging in January and threatened to leak the stolen data of nearly 1.3 million patients on the darkweb.

Medusa Group Tied to Attack on SimonMed and Threats to Leak Stolen DataTwo radiology practices are notifying nearly 1.5 million people of separate hacking incidents compromising their sensitive health information. Cybercrime gang Medusa claimed credit for attacking Arizona-based SimonMed Imaging in January and threatened to leak the stolen data of nearly 1.3 million patients on the darkweb.

Outsourcing your helpdesk always seems like a good idea – until someone else's breach becomes your problem Discord has confirmed customers' data was stolen – but says the culprit wasn't its own servers, just a compromised support vendor.…

Names, emails unplugged in DCS support snafu – but 'billing is safe' An electric vehicle charging point provider is telling users that their data may be compromised, following a recent security "incident" at a service provider.…

Firm Admits Paying Ransom in Exchange of Hacker's Promise to Delete Stolen InfoTwo Florida-based law firms with offices in other states are notifying 282,100 people whose healthcare and other information was potentially compromised in separate data theft incidents. One of the firms admitted to paying a ransom to prevent its data from being leaked on the dark web.

The SafePay ransomware gang is threatening to leak 3.5TB of data belonging to IT giant Ingram Micro, allegedly stolen from the company's compromised systems earlier this month. [...]

While the leak affected customer data, LexisNexis said in a notification letter that its products and systems were not compromised.

Threat actors are intensifying internet-wide scanning for Git configuration files that can reveal sensitive secrets and authentication tokens used to compromise cloud services and source code repositories. [...]

On Wednesday, CISA warned of heightened breach risks after the compromise of legacy Oracle Cloud servers earlier this year and highlighted the significant threat to enterprise networks. [...]

Ransomware Gang Qilin Claims to Have 42GB of Practice's Stolen DataRansomware group Qilin posted at least 42 gigabytes of data stolen from a Texas pediatric orthopedic practice for sale on its darkweb leak site in February. In recent days, Central Texas Pediatric Orthopedics began notifying more than 140,000 people that their data was compromised by hackers.

A cascading supply chain attack on GitHub that targeted Coinbase in March has now been traced back to a single token stolen from a SpotBugs workflow, which allowed a threat actor to compromise multiple GitHub projects. [...]