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@@ -18683,6 +18683,17 @@ measuring time, making it easier to exploit.</li>
 - Retbleed focuses on return instructions, which are part of the
 retpoline software mitigation against the speculative execution class of
 attacks that became known starting early 2018, with Spectre.</li>
+<li><a href="https://downfall.page/">Downfall</a> <sup><a href="https://web.archive.org/web/20230809145002/https://downfall.page/">[Archive.org]</a></sup>
+- Gather Data Sampling (GDS) and Gather Value Injection (GVI) techniques
+exploit the <strong>gather</strong> instruction to steal information
+from <a href="https://en.wikipedia.org/wiki/Single_instruction,_multiple_data">SIMD
+register buffers</a> and victim processes.</li>
+<li><a href="https://comsec.ethz.ch/research/microarch/inception/">Phantom
+&amp; Inception</a> <sup><a href="https://web.archive.org/web/20230809095321/https://comsec.ethz.ch/research/microarch/inception/">[Archive.org]</a></sup>
+- Attacks that leak arbitrary data using seemingly “phantom”
+instructions on AMD Zen CPUs; “[making] it take wrong actions based on
+supposedly self conceived experiences”, an allusion to the Inception
+movie, one we have made before.</li>
 </ul>
 <h1 id="appendix-b6-warning-for-using-orbot-on-android">Appendix B6:
 Warning for using Orbot on Android</h1>