What do the two "sides" (the new Power and the humans) do to try to neutralize the other in the novel, A Fire upon the Deep?

The humans see potential danger and the Power sees that it is no longer needed, and the two sides race: the newborn Power to make sure that it has missed nothing crucial in the archives, and the humans to spirit away a mysterious "quantum data container." The humans divide into two ships, launching from 200,000 km. apart while the new Power concentrates on the container. The Power lacks offensive weapons to stop the frigate before it makes an ultradrive hop and is lost. The Power uses a comm laser to infiltrate the outbound ship's code and shut everything down, dooming these humans. Meanwhile a clumsy container vessel jumps successfully.