Upgrade your website themes, plugins and core files, if none of these are up to date, your site will be vulnerable and it may be hacked. You can also Install security plugins, when possible.
Use a strong username and password so that hackers will find it difficult using tools to guess your password.
Use HTTPS instead of HTTP, As a consumer, you may already know to always look for the green https in your browser bar any time you’ll be providing sensitive information to a website. Most consumers know to recognize those five little letters as an important shorthand for security: they signal that it’s safe to provide financial information on that particular webpage.
You may also activate cloudflare in your cpanel or register an account on cloudflare.com, activate “I am under attack”, this will keep bots away from accessing your websites.