Bandits now only appear on your Scanner if they are within your range of perception, which is how creatures already work. This means that if you wish to snipe at bandits from a greater distance than your perception allows, you will need to improve your range of visibility, perhaps by increasing your Perception skill or acquiring a pair of Macrobinoculars.

Additionally it would be wise to claim any unclaimed items lying around in the open or in NPC-owned entities (such as safes) that you wish to keep, at your earliest convenience. More information on this is coming!