AS/400 attacks are a whole next level of interest after first wave of Spectre on Intel/AMD etc. This is a much bigger can of worms than any vendor is admitting

AS/400 attacks are a whole next level of interest after first wave of Spectre on Intel/AMD etc. This is a much bigger can of worms than any vendor is admitting to right now. Those documented Spectre attacks were crafted by a handful of researchers - the world knows about the class of attack now - it'll be months or years before mitigation is fully understood - if mitigation is even possible. You can guarantee there are a lot more people are looking to exploit than fix right now.