Cybersecurity company ESET has disclosed that it discovered an artificial intelligence (AI)-powered ransomware variant codenamed PromptLock.
Written in Golang, the newly identified strain uses the gpt-oss:20b model from OpenAI locally via the Ollama API to generate malicious Lua scripts in real-time. The open-weight language model was released by OpenAI earlier this month.
“PromptLock
Cephalus is a relatively new ransomware operation that emerged in mid-2025, and has already been linked to a wave of high-profile data leaks.
Read more about it in my article on the Fortra blog.
Anthropic on Wednesday revealed that it disrupted a sophisticated operation that weaponized its artificial intelligence (AI)-powered chatbot Claude to conduct large-scale theft and extortion of personal data in July 2025.
“The actor targeted at least 17 distinct organizations, including in healthcare, the emergency services, and government, and religious institutions,” the company said. “
A threat activity cluster known as ShadowSilk has been attributed to a fresh set of attacks targeting government entities within Central Asia and Asia-Pacific (APAC).
According to Group-IB, nearly three dozen victims have been identified, with the intrusions mainly geared towards data exfiltration. The hacking group shares toolset and infrastructural overlaps with campaigns undertaken by threat
Employees are experimenting with AI at record speed. They are drafting emails, analyzing data, and transforming the workplace. The problem is not the pace of AI adoption, but the lack of control and safeguards in place.
For CISOs and security leaders like you, the challenge is clear: you don’t want to slow AI adoption down, but you must make it safe. A policy sent company-wide will not cut it.
A widespread data theft campaign has allowed hackers to breach sales automation platform Salesloft to steal OAuth and refresh tokens associated with the Drift artificial intelligence (AI) chat agent.
The activity, assessed to be opportunistic in nature, has been attributed to a threat actor tracked by Google Threat Intelligence Group and Mandiant, tracked as UNC6395.
“Beginning as early as
Cybersecurity researchers have discovered five distinct activity clusters linked to a persistent threat actor known as Blind Eagle between May 2024 and July 2025.
These attacks, observed by Recorded Future Insikt Group, targeted various victims, but primarily within the Colombian government across local, municipal, and federal levels. The threat intelligence firm is tracking the activity under
Citrix has released fixes to address three security flaws in NetScaler ADC and NetScaler Gateway, including one that it said has been actively exploited in the wild.
The vulnerabilities in question are listed below –
CVE-2025-7775 (CVSS score: 9.2) – Memory overflow vulnerability leading to Remote Code Execution and/or Denial-of-Service
CVE-2025-7776 (CVSS score: 8.8) – Memory overflow
A team of academics has devised a novel attack that can be used to downgrade a 5G connection to a lower generation without relying on a rogue base station (gNB).
The attack, per the ASSET (Automated Systems SEcuriTy) Research Group at the Singapore University of Technology and Design (SUTD), relies on a new open-source software toolkit named Sni5Gect (short for “Sniffing 5G Inject”) that’s
In episode 65 of The AI Fix, a pigeon gives a PowerPoint presentation, Mark plays Graham a song about the Transformer architecture, a robot dog delivers parcels, some robots fall over at the World Humanoid Robot Games, and Graham takes credit for one of computing’s greatest insights.
Plus, Graham explains why Microsoft doesn’t want you to use Excel’s new Copilot feature in any spreadsheet calculations that are meant to be useful, accurate, reproducible, or relied on for anything important, and Mark discovers what happened when researchers gave 500 AIs their own social network.
All this and much more is discussed in the latest edition of “The AI Fix” podcast by Graham Cluley and Mark Stockley.