Writing a basic security plan is a must for all businesses, regardless of size. For small businesses, an essential security plan will take a few hours to draft (8 to 10 hours), and write up an inventory list (2 or 4 hours), and after that come up with relevant checklists to update and recovery should take you a few more hours (4 or 5 hours).
Note: Writing relevant information security policies, procedures, and processes draft-documentations to satisfy ISO 27001 requirement is no proportional to the size of your organization and will take a few dedicated days (4 or 5 days), and few weeks to refine.
Here’s how a small business builds its working cyber security plan. Large companies have more complex needs requiring a more sophisticated strategy and beyond the context of this article, contact me with you need assistance with your needs.