User blog comment:The Milkman/Extended Expectations, Part II/@comment-1441235-20120629062602/@comment-4953843-20120629083729

good point commdor that almost had me convinced.

except that if you take for consideration that the normany's tech has been around for quite a while now, the reapers would've had ample time to develop countermeasures. or counter-countermeasures to whatever EDI's deploying. they took control of the geth (and cerberus), which means they would've learned about the windows thing from their memories (and the normandy's specs) and compensated accordingly. oversight much?

the only way i can rationalize this is that reaper arrogance caused them to ignore this elementary precaution. coupled with EDI's competence on the normandy's cyberwarfare suite and joker's l33t piloting skillz, the normandy lucked out.