The novella “All Systems Red” by Martha Wells was published for the first time in 2017. It won the Hugo, Nebula, and Locus Awards as the best novella of the year. It’s the first work of “The Murderbot Diaries” series.
Murderbot is the self-given name of the SecUnit that managed to hack its own control program which normally keeps it under the command of human beings. It would rather watch soap operas than protect the clients it’s assigned but what is supposed to be a scientific expedition requires its intervention.
When Murderbot must rescue a member of the scientific exploration team, it discovers that parts of the available maps have been erased. Faults and problems pile up in an increasingly suspicious manner and Murderbot independently decides to protect its clients.