Fig. 4From: Keep the PokerFace on! Thwarting cache side channel attacks by memory bus monitoring and cache obfuscationVariation of memory bandwidth on an Azure D14 instance. The graph shows the variation in memory bandwidth on an idle Azure cloud instance during the course of a day. This depicts the general trend on public clouds and lays the foundation for the inference that a sudden steep decrease in bandwidth can be due to a side channel attackBack to article page