SSL is an industry standard that is being used by millions of websites to protect the online transactions with their customers.
Why SSL ??
As a Server Admin, I have come across many people asking "Why do we need SSL? How does it play an important role in security?" This is a very valid question for any person accessing Internet to understand. Secure Sockets Layer (SSL) is a commonly-used protocol for managing the security of a message transmission on the Internet.
Let us take a simple example of net banking, If the data is sent across the network unencrypted, Any hacker sitting in between you and the bank server can easily see your user names, passwords, credit card numbers and other sensitive information. However, When a SSL certificate is installed, All the data between you and server will be encrypted. As a result the information will become unreadable to everyone, Except the server to which the information is being sent.
"How SSL works" will be seen in the next blog.
How to check if a site is secure ??
Each and every site that can be accessed using a https protocol will consist of either signed or self signed certificates.
In Mozilla : If the site is secured by HTTPS protocol, Then the bar prior to the address tab will contain the certificate information.
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Screen shot from Fire Fox 5.0 Version
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In IE : Pad lock next to the address bar contains the certificates information as shown below. Certificate can be seen by double clicking the padlock.
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Screen shot taken from IE 7
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