Hi, I recently went to a website from a link someone sent to me. However, I'm not sure that it was safe. I tried to register, but it keep saying there was an error (on the site) which seemed sketchy. Anyway, now that they have my IP, what can they do with it? Can they hack my computer? Can they send me keyloggers/viruses? How much information can they get to and how can I stop them from doing anything? I'm really worried about my passwords and things... :S Thanks for your help!
Just because they have your IP address doesn't mean that have an open invitation to the information that's on your computer. However, if the link you clicked on did install a keylogger, that's a different story. I'd scan your computer with Malware Bytes, or another reputable malware detection software just to make sure.
More importantly, the thing I'd be worried about the most is the fact that most people use the same login/password combo on many sites. Since you attempted to sign up for their site perhaps you used the same login/pass combo you use on other sites as well. I would IMMEDIATELY change all of my passwords where the same login/pass combo is used. We also recommend not using the same password at more than one site.