PROBE affects your vulnerability (or strength) on security issues. A high score will help prevent enemy probe team attacks.
-2, -50% cost of enemy probe team actions; enemy success rate increased
-1, -25% cost of enemy probe team actions; enemy success rate increased
0, Normal security measures
1, +1 probe team morale; +50% cost of enemy probe team actions
2, +2 probe team morale; Doubles cost of enemy probe team actions!
3, +3 probe team morale; Bases and units cannot be subverted by standard Probe Teams!!