Back in 2018, a processor security vulnerability called Spectre appeared, affecting all modern CPU architectures from Intel, AMD, and even ARM in the last 20 years. Since then, major players and semiconductor OEMs have worked hard to patch out the vulnerabilities in a cybersecurity whack-a-mole game, in some cases leading to performance loss

Source: Hot Hardware – New Spectre Chip Security Vulnerability Found That Leaves Billions Of PCs Still Defenseless