Steve here
I will try to help some of you with PTC site
1. Yes they are hiting ptc sites and posting links to other sites
2. Yes they are changing pass words of members
3. If is was a real hacker he would take your site off line
4. It is a young kid playing for what no telling mabey just to show how big he is down there or just trying to get cash for ptc site owners to fix.
I am Not a hacker but i can hack in to almost any ptc site out there
why because I have fix or up dated the script one then once
I can unhash the sql pass to many users out there because most ptc members will use the same paswords for all the site they click at.(BAD)
What can you do
1. Fist if they or changing passwords - try this delete the password forgot file or rename it - why so they can't just take the users name and rename the pass
2. do use admin for admin as your pass
3. if you think he is try to hack your site Look in the cpanel error log if you see stuff like denial access to server in the log ask your host to see if they can block that hits
4.The best thing is to add
cloudflare to your cpanel if you don't know how ask your hosting to add it for you IT IS FREE
if you dont know what it is them go here and learn
https://www.cloudflare.com/Be safe
Steve