Sometimes I look at the login history of my blog account (a Tumblr blog) to make sure no one else is logging in (because I have private posts that I want to keep private).
Even though today I accessed my blog from the same computer as always, today my history showed that I was logging in from a different IP address than normal.
I live in Michigan, and normally when I look up login history, my IP address is listed as my same old IP address in Michigan.
However, today when I logged in at 8 am, my login history showed an IP located in California. Even though I'm in Michigan, it showed that my 8 am login was occurring from a city in CA.
I thought this was weird, so I logged out and logged in again. The second and third time I logged in, my IP was the same old Michigan IP that it normally is.
I searched for the California IP address and it turns out that the "IP usage type" is listed as belonging to yahoo and is a "search engine spider." (Here's the site I used to look up the IP: www.iplocationtools.com.)
What's going on here? Do I need to worry my computer has been hacked or something? Or is this more likely a Tumblr glitch?