Final answer:
In the book Illuminae, BeiTech Industries, led by Rhys Lindstrom, was behind the Kerenza invasion.
Step-by-step explanation:
In the book Illuminae, the invasion of the planet Kerenza was orchestrated by a mega-corporation called BeiTech Industries.
BeiTech Industries wanted to take control of the planet's lucrative mining operations and eliminate any potential witnesses to their illegal activities. They launched a surprise attack on Kerenza, destroying the settlement and killing thousands of innocent people.
The main antagonist behind the Kerenza invasion is a BeiTech executive named Rhys Lindstrom. He is motivated by greed and power, willing to sacrifice lives for the corporation's benefit.