ISMS challenges

Answer: In terms of challenges, you can mention production losses due to information security related incidents, fees and legal actions for non compliance with legal requirements, internal confusion regarding who must do what and when, and the difficulties on maintenance of a good public image. An ISMS can help handle all these items. For example, by implementing proper security controls you can minimize the occurrence and/or impact of incidents, and by establishing policies and procedures you can define clear responsibilities and actions to be performed in relevant situations.

For detailed examples I suggest you these materials:
- Four key benefits of ISO 27001 implementation https://advisera.com/27001academy/knowledgebase/four-key-benefits-of-iso-27001-implementation/
- Free webinar - ISO 27001 benefits: How to obtain management support https://advisera.com/27001academy/webinar/iso-27001-benefits-how-to-get-management-buy-in-free-webinar-on-demand/
- Why ISO 27001 – Awareness presentation https://info.advisera.com/27001academy/free-download/why-iso-27001-awareness-presentation
- How a change in thinking can stop 59% of security incidents https://advisera.com/27001academy/blog/2015/02/16/change-thinking-can-stop-59-security-incidents/
- What is cybersecurity and how can ISO 27001 help? https://advisera.com/27001academy/blog/2011/10/25/what-is-cybersecurity-and-how-can-iso-27001-help/
- Aligning information security with the strategic direction of a company according to ISO 27001 https://advisera.com/27001academy/blog/2017/02/20/strategic-direction-of-a-company-according-to-iso-27001/