Microsoft says security software patches for Spectre and Meltdown are slowing down PCs and servers

Microsoft also said that security updates froze some computers using chipsets from Intel rival AMD, dragging AMD’s shares down nearly 4 percent. AMD shares have gained nearly 20 percent in the last week as investors speculated that the chipmaker could wrest market share from Intel, whose chips were most exposed to the security flaws. Security researchers disclosed the flaws on 3 Jan that affected nearly every modern computing device containing chips from Intel, AMD and ARM Holdings, owned by Japan’s SoftBank Group Corp. “We had learned of this vulnerability under nondisclosure agreement several months ago and immediately began developing engineering mitigations and updating our cloud infrastructure,” Microsoft executive Terry Myerson wrote in a blog post on 9 Janaury. Security researchers disclosed the flaws on Jan. 3 that affected nearly every modern computing device containing chips from Intel, AMD and ARM Holdings, owned by Japan’s SoftBank Group Corp. “We had learned of this vulnerability under nondisclosure agreement several months ago and immediately began developing engineering mitigations and updating our cloud infrastructure,” Microsoft executive Terry Myerson wrote in a blog post on 9 Janaury.