According to tech wizard Leo Notenboom, “a new twist” on hackers comprising Hotmail accounts has left some users with unauthorized (and poorly written) ads in all of their outgoing messages. Notenboom explains that the culprit is a default email signature created by the hacker. Learn how to change your Hotmail email signature in his article: “Why do messages I compose in Hotmail now start with an ad that looks like it’s from me?“.