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Modules, Upgrades, and Countermeasures


Countermeasures form a computer system’s last defense against hackers trying to compromise it. Countermeasures are specifically designed to activate when an unauthorized user attempts unsuccessfully to access the system, usually by entering an incorrect password or by failing to bypass other security precautions. Some activate the moment a user tries to get into the system and deactivate only once the correct password has been entered. In either case, a computer can have a number of countermeasures equal to its tier.


Source Starfinder Core Rulebook pg. 215
Price 500 credits; Type Countermeasure
This countermeasure unleashes insidious virus software into any system that tries to hack it, causing damage to that system and its programming. If you fail a check to hack the computer by 5 or more, any device used in the attempt to break into the system is infected and becomes unreliable, resulting in a –5 penalty to all skill checks involving the infected equipment. You can remove a virus from an infected system if you succeed at a Computers check with the same DC as hacking the computer that has the feedback countermeasure. At the GM’s discretion, feedback viruses can have other effects instead, such as granting a +5 circumstance bonus to anyone attempting to hack the infected system. A feedback countermeasure costs 500 credits.