SSL (Secure Socket Layer) is a technology to encrypt communications. NetFront and SSL-compliant Webpages communicate with encrypted data, preventing interception by third parties.
Data is encrypted when you enter credit card number and personal data, under this technology.
Browsing Webpages 

SSL (Encrypted Communications)
SSL-Compliant Webpages
An icon indicating "SSL communicating" is displayed while browsing SSL-compliant Webpages. The roles of the icon are described here.
1 | Open an SSL-compliant Webpage, and the icon (![]() |
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2 | Tap the icon (![]() |