For pictures I recommend using a mix of WordPress image sizes and the ewww image plugin. How this works is you set the sizes for the images in WordPress that you want it to display for desktop, tablet and phone and the ewww plugin takes all the pictures and makes version of each size and delivers the right size picture for the device for you without you having to think about it. You can add your own sizes. This... Source: about 1 year ago

I also use EWWW for optimizing my images on Wordpress and converting images to WEBP. - Source: dev.to / about 3 years ago

If you use a solid host like WPengine and a security app like wordfence.com it would be a very rare day indeed to get hacked. Source: about 1 year ago

If on wordpress, use the free version of wordfence.com to scan your site and identify possible viruses. Continue to use wordfence to protect the site, and if a successful business blossoms, consider the premium paid version. I'm not affiliated in any way, I've simply used the product with success for a number of years. Source: over 2 years ago

You can also read the documentation to learn about Wordfence's blocking tools, or visit wordfence.com to learn more about Wordfence. Source: over 2 years ago