Continuing his reverse-engineering of the Intel 8087, [Ken Shirriff] covers the conditional tests that are implemented in the microcode of this floating point processing unit (FPU). This microcode ...

CPU manufacturers must address issues that arise with processors already on the market, especially the errors that are discovered over time. To handle this, Intel has released a new version of ...

Bottom line: Chipmakers typically use microcode updates to fix bugs and improve CPU reliability. However, this low-level layer between hardware and machine code can also serve as a stealthy attack ...

A researcher from Rapid7 created a working Proof of Concept for a CPU ransomware Such a ransomware would persist on a device even after the hard drive had been replaced The PoC will (most likely) ...

Anyone owning an AMD CPU with Zen 1 - Zen 4 microarchitecture may want to double check their BIOS is up to date. According to Tom's Hardware, AMD CPUs with a BIOS patch earlier than 2014-12-17 have a ...

The Secure Encrypted Virtualization (SEV) function of AMD server processors is less secure than the name suggests: Google researchers found that Epyc processors are sloppy when it comes to signature ...

Opinion All malicious attacks on digital systems have one common aim: taking control. Mostly, that means getting a CPU somewhere to turn traitor, running code that silently steals or scrambles your ...

Google researchers recently published proof-of-concept code demonstrating the ability to create malicious microcode patches on AMD processors from Zen 1 through Zen 4. This vulnerability would allow ...

When AMD finally issued patches for its critical microcode security hole on Monday, it said that the glitch 'could lead to the loss of Secure Encrypted Virtualization protection.' AMD on Monday issued ...

What just happened? AMD has confirmed a security vulnerability in some of its processors, which was inadvertently revealed through a beta BIOS update from Asus. The flaw, described as a "microcode ...

AMD has confirmed an unpatched “processor vulnerability” that may require CISOs to isolate their systems or even air gap them until there’s a fix. AMD has had to confirm the existence of a major ...

Intel and motherboard manufacturers have botched the presentation of the current desktop processor generation in many respects. Intel has now admitted just how badly in a statement. According to the ...