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The Hacker News - Cybersecurity News and Analysis: fastest processor

Intel, ARM, IBM, AMD Processors Vulnerable to New Side-Channel Attacks

Intel, ARM, IBM, AMD Processors Vulnerable to New Side-Channel Attacks

August 06, 2020Ravie Lakshmanan
It turns out that the root cause behind several previously disclosed speculative execution attacks against modern processors, such as Meltdown and Foreshadow , was misattributed to 'prefetching effect,' resulting in hardware vendors releasing incomplete mitigations and countermeasures. Sharing its findings with The Hacker News, a group of academics from the Graz University of Technology and CISPA Helmholtz Center for Information Security finally revealed the exact reason behind why the kernel addresses are cached in the first place, as well as presented several new attacks that exploit the previously unidentified underlying issue, allowing attackers to sniff out sensitive data. The new research explains microarchitectural attacks were actually caused by speculative dereferencing of user-space registers in the kernel, which not just impacts the most recent Intel CPUs with the latest hardware mitigations, but also several modern processors from ARM, IBM, and AMD — previou
This Unpatchable Flaw Affects All Intel CPUs Released in Last 5 Years

This Unpatchable Flaw Affects All Intel CPUs Released in Last 5 Years

March 06, 2020Wang Wei
All Intel processors released in the past 5 years contain an unpatchable vulnerability that could allow hackers to compromise almost every hardware-enabled security technology that are otherwise designed to shield sensitive data of users even when a system gets compromised. The vulnerability, tracked as CVE-2019-0090 , resides in the hard-coded firmware running on the ROM ("read-only memory") of the Intel's Converged Security and Management Engine (CSME), which can't be patched without replacing the silicon. Intel CSME is a separate security micro-controller incorporated into the processors that provides an isolated execution environment protected from the host opening system running on the main CPU. It is responsible for the initial authentication of Intel-based systems by loading and verifying firmware components, root of trust based secure boot, and also cryptographically authenticates the BIOS, Microsoft System Guard, BitLocker, and other security features
This Open Source 25-Core Processor Chip Can Be Scaled Up to 200,000-Core Computer

This Open Source 25-Core Processor Chip Can Be Scaled Up to 200,000-Core Computer

August 26, 2016Swati Khandelwal
Researchers have designed a new computer chip that promises to boost the performance of computers and data centers while processing applications in parallel. Princeton University researchers have developed a 25-core open source processor, dubbed Piton named after the metal spikes used by rock climbers, which has been designed to be flexible, highly scalable, fast and energy-efficient to satisfy the demands of massive-scale data centers. Every computer has a processor, but it's the core, a processing unit, which defines its actual efficiency and performance. A Processor can have a single core or multiple cores, which receive instructions, then performs calculations on it based on those instructions, and gives the results back. For example, the four independent processing units i.e. Cores of a quad-core processor can run multiple instructions at the same time, increasing the overall performance for applications compatible with parallel processing. Your Future Desktop
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