From Exodus3000 Wiki

There are twenty different levels of security in Exodus3000. Each level is represented by a different type of security weapon.

==Security Weapons==
Level Cost Name
1 250 Common Colony
2 400 Metal Fence
3 500 Security Shield
4 700 Mars Sentinels
5 1000 Black Hole Field
6 2200 Cloak Generator
7 3125 Electric Fence
8 3750 Dust Mines
9 5375 Cosmic Barrier
10 7250 Invisible Boundary
11 7950 Carbon Cloud
12 8125 Sentry Swarm
13 8525 Sandstorm
14 9375 Firefield
15 11375 Barbed Ice
16 15900 Night Vision Array
17 21000 Acid Tsunami
18 24900 Magma Splatter
19 35000 Disorientation Cluster
20 50000 Fireproof Citadel
21 50000 Ice Acropolis
22 50000 Shrapnel Spray
23 50000 Sonic Blastwave
24 50000 Martian Maser
25 50000 Prevalent Portcullis
26 50000 Iron Palisade
27 50000 Fire Nexus
28 50000 Volcanic Grapnel
29 50000 Colossal Presidio
30 50000 Beagle Bastille

[edit] Uses

Security is a homestead or settlement's first line of defense. Security is compared with an attacker's intelligence when the attacker attempts to scout a targeted homestead or settlement. The two levels are compared, and the highest level is declared the winner. If the defender wins, no information about the installation is revealed. If the attacker wins, the defense level of the homestead or settlement is revealed. If the intelligence and security levels are equal, a winner is randomly determined.

Security as an upgrade is more important as a sort of psychological upgrade, as having a higher security level invokes the natural curiosity of your typical Martian explorer. With the defense level hidden, most players attempt to attack regardless of whether their weapons equals their security or not. If the defense level is known to be higher than the attacker's weapon level, they will most likely not attack.

Exodus3000
Statistics	Weapons | Defense | Intelligence | Security | Radar
In-game Elements	Dig | Cards | Missions
In-game Locations	Mars | Homestead | Abandoned Homesteads | Settlements | Outposts | Volcanoes | Ruins | Craters | Plains | Dunes
Rules and Regulations	Alliances | Basics | Cheating | Payouts | Purchases | Special Prizes | Referrals | Cards | Dig for Treasure
Official Website	Official site