New Variants Found in Spectre and Meltdown

Kacy Zurkus

Two new variants of the Meltdown and Spectre vulnerabilities that can allow an attacker to gain access to sensitive information have been disclosed, according to a 21 May US-CERT alert.

Google and Microsoft announced that the new variants, 3a and 4, known respectively as Meltdown and Spectre, affect the central processing unit (CPU) hardware implementations, making them vulnerable to side-channel attacks.

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