Simple Solution For Spectre

https://github.com/crozone/SpectrePoC/blob/master/spectre.c

In the this POC, we can extract the memory content.

because we have this kind of code, so hackers can use to exploit your memory:
void victim_function(size_t x) {
   if (x < array1_size) {
      temp &= array2[array1[x] * 512];
   }
}


but when we change into this:

void victim_function(size_t x) {
   if (x < array1_size) {
      for (volatile int z = 0; z <= rand()%10; z++) {}
      temp &= array2[array1[x] * 512];
   }
}

magic happends: