Nia works in security. She protects a company's computers. Most nights are quiet. Tonight is not.

A warning appears on her screen. Someone is trying to enter the system with an old password. Again and again.

Nia is good at her work. She follows the signal to one computer in the sales office. The owner is on holiday.

She calls the manager. "Change the password now," she says. "Use a long one. Do not use your dog's name."

Nia is patient. She watches the screen until the warning stops. The door is locked again.

Her team is diligent and checks every account. In the morning, the manager says thank you. Nia smiles. Good security is quiet work, but it matters.

A thought to keep

A strong password is a locked door.