Seeing as the keep "discovering" things that are well known in the security research community, this is security research in the same way that a high school class is physics research.
Cache based side channels were in vogue over a decade ago. It was a point of contention back when people were first switching to AWS because "How can I be sure an attacker running on the same box as my service can't affect me?" is a big question that AWS needed to answer.
Cache based side channels were in vogue over a decade ago. It was a point of contention back when people were first switching to AWS because "How can I be sure an attacker running on the same box as my service can't affect me?" is a big question that AWS needed to answer.