unwrapping: Heartbleed Security Bug: Tumblr was among the many, many websites affected by the Heartbleed bug, a vulnerability in supposedly secure connections. Heartbleed even has its own blood-dripping logo. Tumblr has fixed the problem and posted an urgent security update, recommending that you change your Tumblr password. Expect notices from other affected websites as they patch the problem and change passwords accordingly. Learn more about protecting yourself from Heartbleed.