DRAM/SRAM/Flash bits and CMOS triggers flipped (not all at once, random). Magnetic media is much more resistant, but in almost all HDDs using classic CPU (and D

DRAM/SRAM/Flash bits and CMOS triggers flipped (not all at once, random). Magnetic media is much more resistant, but in almost all HDDs using classic CPU (and DRAM cache), which are affected by cosmic rays, so info corrupted when travel from HDD surface to computer motherboard.