Transport Layer Security (TLS) is a cryptographic protocol used to establish a secure communications channel between two systems.  It is used to authenticate one or both systems and protect the confidentiality and integrity of information that passes between systems. Because of its widespread use online, SSL and TLS have been targeted by security researchers and attackers.  If you are not using the current version of your Web browser, please take a moment to upgrade it now. Browsers released before 2014 may not support the new secure TLS 1.2 version that is going to take effect on 30th of June, 2018. As a result, you’ll most likely lose sales and revenue because you won’t be able to process cards during this time.