The bug affects the SSL encryption technology and allows hackers to trick computers into sharing sensitive data which could give them access to your emails or social media accounts.
== How can I check ? ==
http://www.poodletest.com/
if you want to test a server
http://www.poodlescan.com/
https://scotthelme.co.uk/sslv3-goes-to-the-dogs-poodle-kills-off-protocol/