User blog:MonochromeSaya96/Blocked

So I was browsing a blog and it said that I cannot comment because my IP address was automatically blocked. It is automatically blocked because it was used by some user who, in turn, was blocked because of creating Spam Pages.

How was this possible? I'm pretty sure I've only opened my email and all my other online accounts on my own PC. I never open it on a public outlet. Can anybody help?