No. As long as you're preforming speculative execution Spectre vulnerabilities will persist. (Meltdown was different and solved.) The good news is Spectre styl

No. As long as you're preforming speculative execution Spectre vulnerabilities will persist. (Meltdown was different and solved.) The good news is Spectre style vulnerabilities are extremely hard to use and indeed have never been observed in the wild. Also, good security practices (only run trusted code on your own dedicated machine) provide full protection against theoretical Spectre attacks.