The corsair has a low damage attack but with a very high rate of fire that also causes 1/2 splash damage to units within a 50 pixel radius around the target and 1/4 splash damage within 100 pixels.
This makes the corsair similar to the terranvalkyrie: both are ideal against groups of low-armor units like mutalisks but are somewhat less effective against more heavily armored units like battlecruisers and carriers. Disruption Web allows corsairs to provide valuable combat support by temporarily crippling an opponent's ranged-attack structures/units.
The Corsair pilot can focus their psychic energy through the vessel's Neutron Emitter, which creates psionic static which disrupts neural impulses and renders computer-directed attacks inaccurate. The web is drawn towards the magnetic resonance found in ores and minerals. This static prevents all ground units and buildings (including base defenses such as bunkers and missile turrets) from attacking while they remain under it, but does not prevent attacks from outside. Affected units may still be attacked and damaged by units outside the web.