Contamination causing highly divergent physical and psycholological changes...

Serph doesn't quite have a full understanding of constructs like SecUnit, but catastrophic shutdown seems another term for 'severely wounded to the point of losing consciousness'. And 'integrated into the contaminated central system' sounds a lot like having an altered mental state forced upon it.

He keeps his gaze outwards, but there's the smallest hint of sympathy in his voice. "Are you worried it's happening to you again?"

Worried that it'll lose control of itself? Worried that it'll become something it doesn't want to be?