I’m a part-time WordPress developer, but have only a bit of knowledge about TLS. I help my friend, who has a very small business where she sells classes online. Her WordPress site uses Gravity Forms to sell classes. We have a SSL through Let’s Encrypt and use https.
My friend set up the basics of her Authorize.net account so that she receives money when students register online, through a Gravity Forms/Authorize.net add-on. I have had nothing to do with her Authorize.net account. So when she sent me the Authorize.net email about Disablement for TLS 1.0 and 1.1, I was left in the dark.
We host on a VPS with Dreamhost. I could not find the TLS level anywhere in documentation from DreamHost or Let’s Encrypt (or is it Gravity Forms?). I set up an Authorize.net Sandbox account, but have no idea what to do with it, since I know nothing about my friend’s dealings with Authorize.net.
Since Let’s Encrypt is fairly new, is it safe for me to expect that they will be using TLS 1.2? If not, can you tell me how I can find out if our situation is already using TLS 1.2?