Some underwater data centers can be vulnerable to simple acoustic attacks, such as a pool speaker playing high-pitched sounds beneath the waves.
Companies have only recently begun implementing underwater data centers that can harness the ocean's natural cooling to reduce power usage and carbon emissions. However, experiments have shown that computer hard drives placed in metal containers submerged in water can experience destructive vibrations when sound is played underwater. Pressure amplifies these noises…
Source: www.newscientist.com