Electronic Warfare refers to modules that tamper with the electronics of your own or your target’s ship. There are four main categories, namely ECM with its countermeasure ECCM, Tracking Disruption with its countermeasure Tracking Computer, Sensor Dampening with Sensor Boosting being the counterpart and target painting, which doesn’t have a countermeasure. Generally all races can use any kind of Electronic Warfare, though there are ships that give bonuses to certain types. Another category is the modules that pin down a ship as in either slowing it down or preventing it from warping.

ECM
Favoured by:
some Caldari ships

Modules:
Multispectral Jammer – effective against any race but weaker than the race specific versions
Magnometric Jammer – effective against Gallente
Ladar Jammer – effective against Minmatar
Radar Jammer – effective against Amarr
Gravimetric Jammer – effective against Caldari
ECM Burst – effective against any race, but high demand of capacitor

Rigs:
Particle Dispersion Augmentors – strengthen jamming, but decreased shields as a drawback
Particle Dispersion Projectors – increase optimal range of Electronic Warfare modules, but decreased shields as a drawback

Drones:
Hornet EC-300 (light)
Vespa EC-600 (medium)
Wasp EC-900 (heavy)

Modules used as a countermeasure:
Sensors (Multi-spectrum, Magnometric, Ladar, Radar, Gravimetric)
Sensor Backup Arrays (Multi-spectrum, Magnometric, LADAR, RADAR, Gravimetric)
Projected ECCM (used on frienuly ships but don’t have any effect on the own ship)
Electronics Superiority Rigs

How it works:
ECM modules/drones disrupt the targeting abilities of the other ship for 20 seconds. This is chance based and influenced by the jamming strength of the module/drone and the sensor strength of the target ship.

How the countermeasure works:
ECCM and Sensor Backup Arrays both increase the sensor strength of a ship, which lowers the chance of a jam. ECCM is more effective, but uses capacitor, as opposed to Sensor Backup Arrays.

Tracking disrupting
Favoured by:
some Amarr ships

Modules used:
Tracking Disruptors

Rigs used:
Particle Dispersion Projectors – increase optimal range of Electronic Warfare modules, but have decreased shields as a drawback.
Tracking Diagnostic Subroutines – increase tracking speed of own ship and optimal range disruption of Tracking Disruptors but has decreased shields as a drawback.

Drones used:
Acolyte TD-300 (light)
Infiltrator TD-600 (medium)
Praetor TD-900 (heavy)

Modules used as a countermeasure:
Tracking Computers

Rigs used as a countermeasure:
Tracking Diagnostic Subroutines – increase tracking speed of own ship and optimal range disruption of Tracking Disruptors, but has decreased shields as a drawback.

How it works:
Tracking disruptors reduce both the optimal range and the tracking ability of the target’s turrets.

How the countermeasure works:
Tracking computers increase the optimal range and tracking ability of the ship’s turrets.

Sensor dampening
Favoured by:
some Gallente ships

Modules used:
Remote Sensor Dampeners

Rigs used:
Inverted Signal Field Projectors – increase effect of Sensor Dampeners, but have decreased shields as a drawback.
Particle Dispersion Projectors – increase optimal range of Electronic Warfare modules, but have decreased shields as a drawback.

Drones used:
Hobgoblin SD-300 (light)
Hammerhead SD-600 (medium)
Ogre SD-900 (heavy)

Modules used as a countermeasure:
Sensor Boosters
Signal Amplifiers
Remote Sensor Boosters (work on a target ship but don’t benefit the own ship)

Rigs used as a countermeasure:
Ionic Field Projectors – increases targeting range, but has decreased shields as a drawback.
Targeting System Subcontrollers – increases targeting speed, but has decreased shields as a drawback.

How it works:
Remote Sensor Dampeners lower the maximum targeting range and the sensor resolution of the target ship. The result is that the targeting range of the other ship is reduced and it also takes a longer time for it to get a target lock once it gets in range.

How the countermeasure works:
Targeting range and speed get enhanced with Sensor Boosters being more effective than Signal Amplifiers. The downside is that they use capacitor.

Target painting
Favoured by:
some Minmatar ships

Modules used:
Target Painters

Rigs used:
Particle Dispersion Projectors – increase optimal range of Electronic Warfare modules. This rig has decreased shields as a drawback.

Drones used:
Warrior TP-300 (light)
Vakyrie TP-900 (medium)
Berserker TP-900 (heavy)

Modules used as a countermeasure:
none

How it works:
Increases the signature of the target ship. The result is that target is easier to hit.
Pinning other ships down
Favoured by:
all ships

Modules used:
Warp Jammers – scramble targeted ship and prevent it from warping away.
Webifiers – “web” targeted ship and slow it down significantly

Drones used:
Berserker SW-900 (heavy webifier drone)

Modules used as a countermeasure:
Warp Core Stabilizers

How it works:
Warp Jammers prevent the target ship from warping. It uses a point system meaning that if you use one point of warp scramble strength and the other ship doesn’t have any Warp Core Stabilizers to counter this, it will be prevented from warping away as long as it is in range of your Warp Jammer. Webifiers slow down the target ship as long as it is in range.