Are Mythos’ Cyber Capabilities Overstated? - Yes and No by Muhan Luo🔸

TL;DR: An­thropic re­stricted ac­cess to Claude Mythos Pre­view, cit­ing a ma­jor leap in vuln­er­a­bil­ity dis­cov­ery and ex­ploita­tion ca­pa­bil­ity. I re­view the 3 most com­mon ar­gu­ments from skep­tics: (1) AISLE Se­cu­rity’s pa­per show­ing cheaper mod­els can iden­tify the same bugs as Mythos, (2) bench­mark com­par­i­sons show­ing GPT-5.5 performs com­pa­rably, and (3) Mythos find­ing only one low-sever­ity bug in the cURL pro­ject.On most cy­ber ca­pa­bil­ities: the skep­tics are rig...