My eBay account was hacked recently. In talking with their CSR, it sounds like there is a lot of it going on right now.

If you have an eBay account, turn on two factor authentication so your physical cell phone will be required to collect the one-time code to log in to your account. A bit of a pain yes, but two factor authentication makes it remarkably more difficult for a hacker to get to your account, in my case it prevented the eBay hacker from getting in to my Apple account despite the fact that I naively used the same password for Apple and eBay.
It's a good idea to use two factor authentication for as many of your accounts as you can.

Make sure the password you use for your eBay account is not used for any other account associated with the email address you use for eBay. Luckily for me, I use a different password for Paypal from the one I use for eBay, and the hacker was able to load up my shopping cart with gift cards, and about $1000 of other stuff, but could not check out because he needed my Paypal password and didn't have it.

As complicated as it can get, it's a good practice to use different passwords for all your accounts if you are able to manage it. They make password vault software to help keep track of numerous passwords.

I hope my recent experience saves someone else some grief.

Edwin