Evidently visiting a remote outpost such as the Colonia Route outpost Lagoon Sector NI-S B4-10 can be just as dangerous as returning to the bubble from an extended exploration trip. I was just attacked and my ship was destroyed by an NPC while taking a look at the tourist megaship in the system. I guess the attack must have been triggered by the bit of exploration data that I had accumulated in the 4.5k ly of travelling from the bubble. Not such a big deal finance-wise, but still quite annoying because it feels that much of the play time of 3 days has been destroyed due to no fault of mine - I had assumed that a tourist attraction in a remote outpost would be safe. Apparently I was wrong, so let this be a reminder to other harmless explorers - never trust the game to leave you in peace when you're near civilization of any kind.