http://www.wired.com/2014/04/nsa-heartbleed / government contractor Edward Snowden exposed expose NSA’s eavesdrop encrypted encrypt encryption spy agency snooping whistleblower strong crypto systems properly implemented endpoint security existed for two years spy agencies exploit exploiting discovery caveat researchers security hole OpenSSL software websites encrypt traffic vulnerability encrypted connection your computer cryptographer Bruce Schneier security vulnerabilities catastrophic core of SSL encryption protocol trusted protect their data vulnerability SSL Matt Blaze, cryptographer computer security professor University of Pennsylvania hack hacking hackers steal usernames passwords sensitive services banking ecommerce web-based email private keys vulnerable web sites encrypt your traffic private key Nginx server busy website /