TradePlotter takes security into account at every level of data movement. Period. Every movement of data has strict security mappings that ensure access to only the most minimal of data.
For the frontend: We never send your internal TradePlotter User Id to the frontend, ever. This is one of the stronger elements of security you can ascertain. If noone knows your data id internally, it makes it much more difficult to hack and peck.
A+ security rating from top-rated Qualys for TradePlotter.com and Plot.TradePlotter.com. As for data movement across the web, everything is encrypted. To get an A+, you have to ensure the tightest levels of encryption, the most-secure strategies within reason, and a pledge to all other websites that any data will only be exchanged securely.