All pages and/or resources on the affected site should be secured
equally, utilising the latest and most secure encryption protocols.
These include SSL version 3.0 and TLS version 1.2.

While TLS 1.2 is
the latest and the most preferred protocol, not all browsers will
support this encryption method. Therefore, the more common SSL is
included. Older protocols such as SSL version 2, and weak ciphers (<
128 bit) should also be disabled.