"Security bug Heartbleed could have provided key that unlocks personal online data" PBS NewsHour 4/9/2014
GWEN IFILL (NewsHour): You may have heard headlines today about a major lapse in Internet security and the possibility that millions of passwords, credit card numbers, bank information, and commonly used Web sites could have been exposed.
It involves a bug or security leak called Heartbleed, which can be used to read encrypted information.
Hari Sreenivasan gets a breakdown on what you need to know.
HARI SREENIVASAN (NewsHour): Essentially, Heartbleed can be used to read the memory of computer servers, the places behind a Web site that store your information, including the lock and key system which protects your usernames and passwords.
You probably see this encryption in the form of a green lock when you conduct a transaction and exchange information. The breach was revealed this week, but apparently has existed for a long time.
Russell Brandom of The Verge, an online site covering tech news, is here to help explain.