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NVIDIA is urging customers to enable System-level Error Correction Codes (ECC) as a defense against a variant of a RowHammer attack demonstrated against its graphics processing units (GPUs). "Risk of successful exploitation from RowHammer attacks varies based on DRAM device, platform, design specification, and system settings," the GPU maker said in an advisory released this week. Dubbed GPUHammer , the attacks mark the first-ever RowHammer exploit demonstrated against NVIDIA's GPUs (e.g., NVIDIA A6000 GPU with GDDR6 Memory), causing malicious GPU users to tamper with other users' data by triggering bit flips in GPU memory. The most concerning consequence of this behavior, University of Toronto researchers found, is the degradation of an artificial intelligence (AI) model's accuracy from 80% to less than 1%. RowHammer is to modern DRAMs just like how Spectre and Meltdown are to contemporary CPUs. While both are hardware-level security vulnerabilities, Row...

The online world never takes a break, and this week shows why. From ransomware creators being caught to hackers backed by governments trying new tricks, the message is clear: cybercriminals are always changing how they attack, and we need to keep up. Hackers are using everyday tools in harmful ways, hiding spyware in trusted apps, and finding new ways to take advantage of old security gaps. These events aren't random—they show just how clever and flexible cyber threats can be. In this edition, we'll look at the most important cyber events from the past week and share key takeaways to help you stay safe and prepared. Let's get started. ⚡ Threat of the Week LockBit Developer Rostislav Panev Charged in the U.S. — Rostislav Panev, a 51-year-old dual Russian and Israeli national, has been charged in the U.S. for allegedly acting as the developer of the now-disrupted LockBit ransomware-as-a-service (RaaS) operation, netting about $230,000 between June 2022 and February 2024. Panev was ...