One Thousand and One Assassinations

Am I a living being? No, you are an anti-virus program of the planet software, you are a white blood cell of the planet's life form, you are a drop of venom in the interstellar insecticide, you are an assassin walking in the shadows, your mission is to kill, remove the bugs that affect the program, engulf the virus cells that threaten the health of the living body, poison the hidden pests, and eliminate the targets in the task list...