(Yerba Buena is supposedly part of San Francisco district but for convenience, we will be including it in this map.)
The Key Data is found in a container beside a van. The restricted area has three patrolling guards and four guard dogs but the canines are all inside their pen so you don’t have to worry about the latter. You can just position yourself in the side of the compound where the vehicles are parked then send your jumper to sneak around. Otherwise, you can get rid of the guards first then sneak inside yourself.
This key data is inside a container in the backyard of several houses, guarded by a handful of gang members. The easiest way to deal with them is by dropping explosives or ESDs from your quadcopter; otherwise, you have to activate proximity triggers around them and take them out one by one yourself. There are multiple point of entries and the wooden fences will give you cover as you sneak closer.
This key data is found on the rooftop of the building with several security guards. The way to the rooftop is through the emergency stairs found along the street. If your quadcopter can drop explosives or ESDs, then you’ll have an easier time clearing the rooftop. Once all or some of the guards have been taken care of, you can then sneak to the rooftop yourself or just let your jumper to the job. The container is found inside a ctOS shead in the middle of the rooftop.
This is found in a container in an open backyard shed in the dilapidated neighborhood. The place is lightly guarded so you can either have your jumper sneak inside directly or just get rid of the hostiles and do it yourself. Since it’s in the middle backyard or several houses, there are multiple point of entries but overall, retrieving this key data should be very easy.