The Blog DoggerSecurity at home starts with … a blog? We learned a lot last week: The Department of Homeland Security has a blog, mediasnackers are changing the world and even the mighty Facebook is at the mercy of the blogosphere. By Michael SebastianNov. 14, 2007 SHARE To read the full story, log in. Become a Ragan Insider member to read this article and all other archived content. Sign up today Already a member? Log in here. Learn more about Ragan Insider.