Yes it was specifically called out in someone's tweet I'm trying to find but I believe this was mentioned in the paper. Edit: My mix-up on the paper! Malware

Yes it was specifically called out in someone's tweet I'm trying to find but I believe this was mentioned in the paper. Edit: My mix-up on the paper! Malware Guard Extension: Using SGX to Conceal Cache Attacks (Extended Version) | https://arxiv.org/pdf/1702.08719.pdf https://arxiv.org/pdf/1702.08719.pdf (2017) Recently, Intel introduced an instruction set extension called CAT (cache allocation technology) [51]. With Intel CAT it is possible to restrict CPU cores to one of the slices of the last-level cache and even to pin cache lines. Liu et al. [83] proposed a system that uses CAT to protect general purpose software and cryptographic algorithms. Their approach can be directly applied to protect against a malicious enclave. However, this approach also does not allow to protect enclaves from an outside attacker. [...] Instead of using Intel CAT on the operating level it could also be used to protect enclaves on the hardware level. By changing the eenter instruction in a way that it implicitly activates CAT for this core, any cache sharing between SGX enclaves and the outside as well as co-located enclaves could be eliminated. Thus, SGX enclaves would be protected from outside attackers. Furthermore, it would protect co-located enclaves as well as the operating system and user programs against malicious enclaves. [83] https://www.researchgate.net/profile/Yuval_Yarom/publication/291830462_CATalyst_Defeating_Last-Level_Cache_Side_Channel_Attacks_in_Cloud_Computing/links/56a6b0d408aeded22e3544ff.pdf https://www.researchgate.net/profile/Yuval_Yarom/publication...