Yeah, a civilization that considered a Baneblade a light tank and that could do most of the things the Pervert Knife ears could.
I think they were able to even give the Culture a run for their money, considering how advanced and powerful their damaged, misunderstood leftover trinkets are.
In any case, I am pretty sure that the Mechanicus has done everything they can to harden those systems, ten thousand years of living in the wrecked husk of Mars and fighting techno-cannibals and all sorts of other nastyness probably makes people appreciate InfoSec, especially when it was rogue tech and A.I. that caused much of that suffering.
And of course there is the Emprah, who lived through all that shit, and the Dark Mechanicum that is more than happy to use scrap code and other dastardly tactics to stop its enemies.