Paula went to her local tech store and bought a wireless router. She brought it home, connected it to her ISP supplied modem, and immediately had Internet service in her home. As she was new to the concept of network security, she left all the default router settings.

Over the next few days she noticed that the lights were always blinking on the router and her computer, but did not think it was important, until a friend told her that certain private photos of her had started appearing on the Internet. The friend, who was a computer forensic investigator for the local police department, downloaded logs from her router, and found that it had been compromised. Someone had been accessing her private files on her computer, including all her saved photographs.

a. What did Paula do wrong in setting up the router?

b. How could she secure the router to prevent such compromises or misuse of her router?