The ASEAN Summit Nov 2018 is a high profile event in Singapore.  The government spares no effort to ensure water-tight security, especially in the areas near to the Summit.  This is observed based on the deployment of large number of homeland security and army resources as a show of force to would-be attackers to think twice before striking here in Singapore.

This may displace the attacks to other more vulnerable locations in Singapore.  The homeland security resources cannot be deployed to everywhere.  Hence, other private organisations should tighten their security during this period of heighten security too.

https://www.channelnewsasia.com/news/singapore/tighter-security-around-suntec-asean-summit-november-10899676