Registry question for SSH handler

What does the "unsafe" parameter indicate when launching winscp.exe ? Can it be omitted?

Thank you.

[quote][HKEY_LOCAL_MACHINE\SOFTWARE\Classes\ssh\shell\open\command]
@="\"C:\\Program Files (x86)\\WinSCP\\WinSCP.exe\" /unsafe \"%1\""[/quote]

version= 5.13
windows version = Win7x64

Without the switch, it's possible (with some browsers only) for a malicious web site to craft an URL that would cause WinSCP to execute an arbitrary script on your machine.

https://winscp.net/eng/docs/history?a=3.8.2

Thank you for the quick reply Martin.