Spacecraft Jamming

If the victim uses a free space (over the air) communication, it can be threatened by jamming attacks. An attacker can perform a Denial of Service (DoS) attack to limit or block the service availability through RF jamming. For Proximity-1 jamming becomes difficult, because of high distance from Earth (upload) and the use of commercial frequencies (download jamming would affect a lot of other terrestrial links). Jamming of the ranging signal could lead to the total loss of ranging data, and potential navigation errors.