Fix caching issue in read-unread attacks
Fix caching issue in read-unread attacks

ameihm0912/MozDef,Phrozyn/MozDef,mozilla/MozDef,gdestuynder/MozDef,jeffbryner/MozDef,ameihm0912/MozDef,ameihm0912/MozDef,ameihm0912/MozDef,Phrozyn/MozDef,netantho/MozDef,mpurzynski/MozDef,mozilla/MozDef,gdestuynder/MozDef,Phrozyn/MozDef,jeffbryner/MozDef,jeffbryner/MozDef,mpurzynski/MozDef,netantho/MozDef,netantho/MozDef,Phrozyn/MozDef,mpurzynski/MozDef,jeffbryner/MozDef,mpurzynski/MozDef,mozilla/MozDef,gdestuynder/MozDef,netantho/MozDef,mozilla/MozDef,gdestuynder/MozDef