The SpeechInput feature in Blink, as used in Google Chrome before 35.0.1916.114, allows remote attackers to enable microphone access and obtain speech-recognition text without indication via an INPUT element with a -x-webkit-speech attribute.
blog.guya.net/2014/04/07/to-listen-without-consent-abusing-the-html5-speech/
secunia.com/advisories/60372
www.securityfocus.com/bid/67582
code.google.com/p/chromium/issues/detail?id=360448
googlechromereleases.blogspot.com/2014/05/stable-channel-update_20.html
src.chromium.org/viewvc/blink?revision=171373&view=revision