The following update works for Bitdefender Total Security, Bitdefender Internet Security, and Bitdefender Antivirus. Just choose the version of your software (2013, 2012 or 2011) and the version of your operating system (32-bit or 64-bit). If you are looking for the earlier versions of Bitdefender (2010, 2009 or 2008) please go here, for version 10 please go here. Learn more.