While many open-source enthusiasts like to flaunt RISC-V as not having the security challenges as x86_64 CPUs have seen over the past several years with various speculative execution / side-channel attacks and arguing for the benefits of an open-source ISA in stronger security, in practice it's not so clear-cut. Security researchers at Germany's CISPA Helmholtz Center for Information Security have found current RISC-V CPU implementations coming up short for their actual security...