Your security status depends on the actions that you take in EVE Online. Good security status implies that you are law-abiding. Bad security status implies that you do illegal things. CONCORD considers pilots with low security standing to be criminals. The lower your security status, the more dangerous you are considered to be. Because of this, security status has implications on where you can travel, and how CONCORD treats you. Learn more about this important attribute from this guide.
Killing NPC pirates is currently the only way to increase your security status. You do not get a security status increase for every ship you kill. The increase is based on the most dangerous pirate ship that you destroyed within the past 15 minutes.
Your security status is CONCORD's measure of whether you are law-abiding or criminal. Your security status is an indication of how safe you are considered to be. Your security status goes down if you do illegal things, and your security status goes up if you do things that help CONCORD. Therefore, players with very low security standing should be considered very dangerous, because they have consistently been doing illegal things, which typically are harmful to other players. Players with very high security standing can be considered relatively safe, because they have not been consistently doing illegal things. However, it is possible for a player to be evil, only occasionally doing illegal things, but balancing those things out with good deeds. It is best to be wary of any player.
Security status affects where you can travel. Players with very low security status will be attacked by CONCORD if they try to enter high security space. Also, other players are permitted to attack players with -5.0 or worse security without getting in trouble with CONCORD. Of course, such dangerous players will probably retaliate, so be careful.
If your security status is -2.0, you are not allowed to enter 1.0 space. If your status is -2.5, you cannot enter 0.9 space, and so on. Players with -4.5 status are only able to enter low security systems (that is, systems with 0.4 or lower security).
Here is the above information in list form:
Examples of actions that lower your security status are:
You will not be penalized for an unprovoked attack if you are at war with the player's corporation, or if you have kill rights on that player. If another player makes an unprovoked attack on you, you have the right to fire back at that player and defend yourself without losing security status.