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Overview TLBleed is a new side channel attack that has been proven to work on Intel CPU’s with Hyperthreading (generally Simultaneous Multi-threading, or SMT, or HT on Intel) enabled. It relies on concurrent access to the TLB, and it being shared between threads. We find that the L1dtlb and the STLB (L2 TLB) is shared between threads on Intel CPU cores. Result This means that co-resident hyperthr
Address Space Layout Randomization Address space layout randomization or ASLR in short is a first line of defense against attackers targeting Internet users. ASLR randomizes the location of an application’s code and data in the virtual address space in order to make it difficult for attackers to leak or manipulate the data or reuse the code in order to compromise the application. Combined with the
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