Warning: Needs to be updated (3/8/2019)
Minimal modification has been done from the original content post as of (3/8/2019)
Hereby I present a farming method that beats all other farming methods in highsec (and probably in lowsec and NPC null too). What does "farming" mean? An activity which needs no significant capital or player skills, just time. Obviously this can't match the profit of trading, factory planets, reaction towers and such, but unlike them, you can start it as a new player or when your wallet is empty. Also, you can't really lose here, no matter what.
What are mining missions?
They are provided by mission agents, just like security and distribution missions. They are rewarded by Loyalty Points and ISK. The task is to warp to a mission deadspace location and mine out ore, ice or gas. The mined items will be given to the agent to complete the mission.
