Prima Planetary Defense System

The "Prima"-class Planetary Defense System was a fully-autonomous anti-asteroid and planetary defense package that included a central AI, as well as dozens of orbiting weapons stations and planetside defensive hardpoints. Created by the Aegis Synergistics Corporation, it was originally marketed towards standing armies and national governments as a "plug-in" defense system to augment more traditional forms of defenses, but was later commercially as a premium point-defense and anti-piracy system when there was little interest in the defense industry.

Features
Prima PD features a plug-and-play AI system, meaning that it is fully autonomous and does not require - or accept - human oversight once operational. When brought active, the AI only needs three fundamental laws to follow. The factory laws it is shipped with are: minimize civilian causalities, eliminate threats to the planet, uphold the CAA's laws. Typically, with this ruleset, the AI will only target asteroids, incoming debris, and active threats - and will never fire on unarmed vessels, or those broadcasting CAA IFFs. The built-in personality matrix of the Prima AI is often described as stern and dominating, but almost motherly.

Additionally, the system comes with prefabricated orbital and ground defense hardpoints. Each orbital defense platform is heavily armed with several capital-class railguns, PD laser emitters, and ballistic missile tubes: perfectly capable of shooting towards incoming targets, or down towards the surface at landing invaders. Meanwhile, the ground hardpoints are encased mostly underground in thick, reinforced concrete bunkers - bristling with artillery, PD autocannons, missiles, and yet more capital-class railguns to engage targets in orbit. Most of major population centers have at least one hardpoint, and several defense platforms overhead at any given time. Together, these defenses are capable of both tearing apart even the most robust flagship and engaging targets at the furthest corners of the system.

With being fully autonomous, the system is also capable of semi-enclosed logistics such as fabricating ammunition or performing self-repairs.

DurvasOS
By special request from the S&G Energy Corporation, a modified version of the stock Prima PD system was delivered and installed in Polaris-V. This special version, nicknamed 'DurvasOS', was specifically designed to the company's specifications - adding additional modules for intelligence gathering, electronic warfare, and urban pacification. Additional surveillance platforms were put into orbit alongside upgraded weapons platforms, along with OS improvements to the planet's PD systems. Most importantly, DurvasOS was capable of ignoring official CAA or other governmental IFF codes if it decided they were a threat to corporate operations, as well as enhanced decision-making abilities.

When the system's InterRelay was rammed and destroyed by a hijacked S&G freighter, the AI automatically assumed that the system was both under attack, and that S&G-registered vessels were hostile. It then declared a lockdown and began destroying any vessel, embarking from or incoming to the planet. Additionally, it began ignoring stand-down and shutdown orders from corporate authorities on Durvas - assuming that it was a hostile attempt to disable the planet's defenses. When vessels from the S&G Security Fleet managed to make a unguided jump into the system, the Prima's defenses tore them apart before they even had a chance to react.