Electro-Magnetic Pulse (EMP)

An electromagnetic pulse (EMP), also sometimes called a transient electromagnetic disturbance, is a short burst of electromagnetic energy.
Such a pulse may occur in the form of a radiated electric or magnetic field or conducted electrical current depending on the source, and may be natural or artificial.

EMP interference is generally damaging to electronic equipment, and at higher energy levels a powerful EMP event such as a lightning strike can damage physical objects such as buildings and spaceframe structures.

The damaging effects of high-energy EMP have been used to create EMP weapons. These are typically divided into nuclear and non-nuclear devices.

EMP would affect any ship, new tech or not) that uses electrical systems or computers provided it is not hardened (all our military ships are hardened by default). The EMP effect only exists where there is a high energetic release within a strong magnetic field (for exampe near an iron-core planet with a magnetic field). Earth's magnetic field operates out to around 1.5 million km (covering geostationary orbits and the moon). Many worlds have no magnetic field or a much weaker on.