Gyroscopic Investing

I have encountered a problem where if I open the blog and then open another tab, the blog redirects to another page as soon as I click on a different tab in my browser. Others are having the same issue which pretty much tells me the problem is in the blog, and not my computer. I strongly suspect malicious code of some kind, but I don't know enough about it to find it and remove it.  Any suggestions?

Never mind. I think I fixed the problem. A friend suggested that an old site meter I had forgotten was even on the blog had been known to be an easy target for hackers. I removed it and the problem seems to have gone away.