Everyday security · Personal protection · Released October 2026

Locked Down by Sunday by Kai London

Most people know they should improve their online security but never find the time. This book turns it into a weekend project, with a clear checklist that takes you from passwords and accounts to devices, home Wi-Fi and family safety.

What the book covers

Saturday morning: accounts

Password managers, two-step verification and account recovery.

Saturday afternoon: devices

Updates, backups and settings for phones, tablets and computers.

Sunday morning: home network

Securing your router, Wi-Fi and smart devices.

Sunday afternoon: privacy

Reducing what is shared about you and your family.

Family and children

Sensible protections and conversations for every age.

Staying safe

A simple monthly routine that keeps the work done.

This book offers general guidance for personal use.

Personal securityPasswordsHome networkPrivacy

Who it is for

Anyone who wants to be safer online, families, and people supporting relatives with technology.

About the author

Professor Kai London — CISSP, CISM.

An internationally recognised cybersecurity executive, board advisor and Founder & CEO of Quantum AI Systems Security LLC, writing at the convergence of AI, governance and operational resilience. Honorary Professor and Researcher at UCL.