https://wccftech.com/amd-strategy-spectre-v2-vulnerability-inadequate-54-percent-drop-in-cpu-performance/

Intel and Arm processors were hit this last week by the Spectre V2 vulnerability, the Branch History Injection, or BHI. The Spectre exploit originated several years ago, but this new line of mitigation has had a significant effect on the two chip manufacturers. AMD has a much different design to their chips, allowing them to avoid harm this week. However, three security researchers from Intel have recently written a white paper outlining AMD's chipset having code exposures. In review, AMD has now issued a new security bulletin to reflect the new efficiency for keeping their product safe.

The initial Spectre and Meltdown flaws discovered in December 2017 outline issues with Intel's chip designs, which were found by four separate research teams and reported to the leading company around the same time frame. Intel's plans opened up a flaw where a proof-of-concept code could be introduced into the computer's kernel, opening up information that should be inaccessible. The flaw in the Intel chips was present as far back as 1993.