That part, most clients are worried about being scammed, whether it is by fake pictures, people stealing deposits, a false advertising of services, stating a rate and then attempting to uncharge for everything, etc. there is also a small risk of being robbed and an even smaller risk of being drugged.
However, providers are worried about being raped or murdered. Now, of course clients have on very few occasions been murdered, but the ratio of providers murdered to clients murdered is extremely high. I can only think of one serial killer that targeted clients, but most serial killers target sex workers.
More importantly, the information imbalance that exists between providers and clients is extremely high if the client is savvy. If you put in even a small amount of effort you will know pretty much everything you need to know about me to do a risk assessment before I even know you exist.
For clients who are new to the industry, you protect yourself by reviewing all the information a provider gives you access to. When you view her social media, go to "replies" tab on her twitter profile, see if she engages with other providers. Scammers are now making twitters to look authentic, but they are not taking the time to build community with other sex workers or engage with them for networking because they are scammers and not sex workers. If you make some effort it is not hard to see the type of person you're dealing with.
Good luck, be safe, and remember, you want to screen us to not lose a few dollars, we want to screen you to not lose our lives xo