Heartbleed OpenSSL bug
A serious vulnerability in the popular OpenSSL cryptographic software library was disclosed 30 hours ago. In short it allows (among other things) anyone on the Internet to extract the private keys used for encrypting traffic and identifying service providers to their users. A more complete description can be read on heartbleed.com. This affects a lot of different services including web, email, instant messaging and OpenVPN (which Mullvad uses). Read more