Send report of unused elastic load balancers. If your ELB have no associated back-end instances, If your ELB has no healthy backend instances. Removing AWS components that aren’t being utilised, like the Elastic Load Balancer, will help you avoid unexpected charges on your bill.
It is AWS best practice to remove entries in security group which allows HTTPS access from public IP to reduce possibility of breach. Allowing unrestricted HTTPS access can increase threats like hacking, denial-of-service (DoS) attacks and loss of data