It's had its most*direct impact on about 2500 people, the (ex) members of the Band of Brothers Alliance. But this is not a sharded game like World of Warcraft or Everquest, there is only one shard. Band of Brothers had allies numbering in the thousands, and the Goonswarm alliance likely has double that number, in addition to the opportunist neutral parties who believe that they can profit from the event.

Even those players aside, the scope of this event is large enough that it could have a significant effect on the market, as it's mostly player-controlled. It'll be months before resources begin flowing from that region again regardless of who will own them.

CCP Lists all exploit fixed each patch in their patch notes. For example:

For Trinity 1.1:
        * An exploit where players could cause players to become flagged as a thief without a warning has been fixed.
        * An item duplication exploit has been fixed.
        * Jumping a ship to the inside of a Control Tower force field will now cause the ship to be pushed outside the force field.
        * Its not anymore possible to specify 0-runs for a Blueprint copy job and to run a invention job with a 0-run Blueprint copy.
        * Pilots can no longer have multiple overlapping scan probes scanning simultaneously.
        * It is no longer possible to open the corporate hangar of non-corporation member's ship unless the two players are in the same fleet.
        * A server side exception caused by using EWAR modules on NPC's has been resolved.
        * Fixed a server side error that could occur when loading Strontium into the Strontium bay of a tower.
        * A server side exception caused by Cynosural Generator Arrays has been corrected.

For Trinity 1.03:
        * Fixed a method of duplicating items.
        * Modifying the way contract information is displayed to prevent people from viewing the contents of courier contracts.
For Trinity 1.01:
        * Contracts for ships with modules fitted will no longer cause a ship to be unable to undock.
        * Customs officials have resumed issuing fines and confiscating illegal cargo.