Ultimately, fix wordpress malware virus will also inform you that there's not any htaccess within the directory. You can put a.htaccess record into this directory if you want, and you can use it to manage usage of the wp-admin directory by Ip Address address or address range. Details of how you can do that are plentiful around the internet.
Everything you've worked for will go with this should the server of your site go down. You'll make no sales, get signups or no visitors to your website, until you have the website back up again and in short, you are out of business.
You need to create a new user with administrator rights before you can delete the default admin account. To do this go to your WordPress Dashboard and click on User -> Create New User. Enter all the information you need to enter.
Note that you should try this step for setups. You will also need to change check over here all the table names inside the database if you would like to do it for installations.
You do think about needing security Whenever your site is new but you do need to protect yourself and your investment. Having a site go down and not having the ability to restore it quickly may mean a major loss of customers who can not find you and probably won't remember to look for your site later. Don't let this happen to you. Back up your site after you get it started, and schedule backups for as long as the site is operational. That way, you will have peace and WordPress security of mind.