If your Trading System is a Strategy, then put it on the Strategy Network, available in TradeStation 8.8. The Strategy Network distributes only binary files and restricts use by account and monthly lease periods. Code there is secure.

If you are a C++ programmer, write your code in a C++ dll referencing TSKit.dll for access to data (through the EL code using your dll). Then entitle your dll for specific user accounts.

For those wanting to use .Net dlls, employ a healthy level of obfuscation.

Otherwise, your EasyLanguage code can be hacked and intellectual property lost.

Let me know if you need assistance.