[Suicide Junkie]

How about persistent status effects other than damage?

EG:
Ion Cannon hit: Disables intact engines. Repair cost: 0.25 repair points per component.

Space barnacles. Effect: Ship mass increased by ##kt for movement and combat calculations. Repair cost 1 point per 10kt of barnacles scraped off.

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It seems to me that corruption should really be the opposite...

All the corrupt people will gather in your capitals and other areas of high-importance, since that is where individuals can have lots of power to abuse.

Of course, planets that are left without defenses would be vulnerable to raiders and pirates and theives...
Building defense sats, fighters and troops on the planet could help prevent these kinds of losses, but its not really fair to call it corruption.