EVE uses a numerical scale from 0.0 to 1.0 to indicate relative security for solar systems. The relative security status of a solar system dertermines CONCORD
response to acts of agression and provides a framework for the RulesOfEngagement
. While the game client only displays a rounded one-decimal number, the game actually operates with a more finely grained system of security rating values, termed 'true security'. This article explains 'true security' and its implications.
You may also want to read the article on SecurityStatus
, detailing other aspects of player and system security.
A system's true security value is a fixed number with 15 decimals, ranging from -1 to +1. You can look up a system's true security rating value at http://eve.grismar.net/ssec
The displayed solar system security rating, ranging from 0.0 to 1.0, is simply the rounded true security value. True system security values < 0 are always rounded to 0.0.
Rounding has significant consequences for the RulesOfEngagement
, which are biased towards greater security:
- If a true system security value > 0 is rounded up, the RulesOfEngagement for the system with the higher value apply. E.g., if you attack another player in a system with a displayed system security value of 0.5 that is actually rounded from a true system security value of ≥ 0.45, CONCORD will respond.
- However, if a true system security value > 0 is rounded down, the RulesOfEngagement for the system with the higher/actual value apply. E.g., if you attack another player in a system with a displayed system security value of 0.0 that is actually rounded from a true system security value of > 0 and < 0.05, you will lose corporation standing with Concord, i.e. lose SecurityStatus.
The following 14 systems that have a displayed system security value of 0.0 have a true security > 0 and < 0.05. That means that you will still lose
in these '0.0' systems:
Rounding of true system security values also affects access to solar systems as detailed in StatusAndTravel
. Again the rules are biased towards greater security.
- System access restrictions are based on displayed solar system security status values. If a true system security value > 0 is rounded up, access restrictions for a system with the higher value apply. E.g., a player with a personal SecurityStatus of -2.5 should be able to enter systems rated < 0.9 but cannot enter a system with a true system security value of ≥ 0.85 because that value is rounded to 0.9.
Keep in mind that solar system access is also based on the actual
value of a character's personal SecurityStatus
rather than a rounded value. A character's personal Status
is displayed as a truncated number in the character sheet but gets displayed as a rounded number in the character information window when viewed by other players. Consequently, if you see someone with a personal SecurityStatus
of -2.5 in a system rated 0.9, their actual personal SecurityStatus
would in fact be < -2.5 and ≥ -2.45 and they are free to travel to 0.9 space without CONCORD