GitS cyberbrains and cyberbrain hacking for 2020
There are several homebrews out there to adapt Ghost in the SHell's cyberbrains and cyberbrain hacking into 2020, and those i've seen have been good, each person's take and working somewhat simple but effective, yet I thought to myself ¿isn't there somethign similar in 2020? and Micronetrunning came to mind, so this is kind of a way of bringin that into 2020.
Cyberbrain: A cyberbrain works very similarly to an interchangebale biopod from chromebook 2, with the addition it has ways to interact with the outside world via voice, can be given visual or braindance or net access through several methods, works as a basic neuralware processor, has at least 1 interface plug (likely with universal link from the interface magazines), 1 additional chip slot, and a custom communication system similar to a phone splice and radio link that allows for communication between cyberbrains, this communication of cyebrbrains can also share sensations and part of feelings, with extra things coming from custom desings or the cyborg body.
How to do ghost hacking
That's the somewhat easy part, it works mainly like micronetrunning, but there's no need to have direct access, if it's plugged to the Net it can be hacked like almost everything is in the GitS universe, but usually in GitS media we see it used within a same Metropolitan Area Network but it doesn't mean it can't be used worldwide. A cyberbrain can be put in "autist mode" negating all external communications, cutting from the Net and thus preventing cyber/ghosthacks, it also means you're isolated from the benefits the Net or other comms can give you. And special point of cyberbrain hacking is that you're not limited to hacking only stuff in the micronet of the cyberbrain, but wiht a navigation check you can go to the micronets of other cybernetic implants that someone with a cyberbrain has installed.
Cyberbrains
Since Ghost hacking is more common in GitS the difficulties surrounding micronetrunning have been altered so they're more permisible for the players (and NPCs).
- Basic/Advanced Cyberbrain
- Number of MicroCPUs: 16/20.
- Functions: Same as Complex Cybernetic. Additionally functions for stuff around the "Ghost" that could alter memories and behaviours.
- Connection DV: 20/25 Interface check for remote. 15/20 Electronics check for direct access. Scrambler gives increases remote difficulty by 5.
- Navigation DV: 15/20 CyberTech check. Can move to the microNet of a connected cyberware if in a cyberbrain.
- Control DV: 15/20 if the cyberware is passive, 20/25 if it requires conscious effort. Both checks are Programming.
- Alter DV: 20 programming check. If targeting memories and similar (like for the garbage truck worker) an additional forgery check or psycology for behaviours might be asked with a high DV around 25.
Usually ghosthacking is subtle trying to not alert the target, but depending on the action they might be ticked off, maybe by being notified their memories are false, because they're seeing their arm flail wildly without their control, or by installing cybernetics capable of detecting and alerting intrusions as another example. At any point a character can try and fight anyone within their cyberbrain micronet, this is done with an opposed check between the hacker's INT+Interface+1d10 check vs the target's INT+COOL+Interface+1d10, on a successful roll the hacker is removed from the micronet for 10 seconds per difference on ther roll, more than enough time to activate autistic mode with an action.
Netrunners are instantly aware of this. Or if you desire another ruling, the GM can roll awareness in secret vs the hackers connection roll to see if the netrunner notices pasively. A victim of ghosthacking can try to revert the effects of a hack by rolling an interface check that surpasses the hacker's alter roll. A character has control over their cyberbrain so their only relevant rolls is that of Alter or passing the hacker's roll, otherwise connection, navigation and control is an automatic success.
If a character doesn't have a cyberbrain then they don't have this automatic access and are like any other joe trying to enter and edit the cyber's microNet. Electronics usually work like this without being instantly aware and in control as they're not conected to the cyberbrain.
And I guess this can be used for 77 quickhacks. Just change the range to 50m if you follow RED's Edgerunners Mission Kit or 400m if you want to keep the numbers of LOCATE/CONTROL Remote from the 2020 corebook.