This might be a problem worth talking about on The Tek. TL; DR Shared Memory between virtual machines. Meaning separate virtual machines using this proof of concept could see other VM's stored data. Like real time credit card transactions stored in the RAM.
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As this attack relies on memory duplication, the feature could be disabled to completely mitigate this attack, albiet at the cost of additional memory overhead or more accurately at the cost of not reducing memory overhead.
Nice post though, a simple but effective side-channel attack