+The older SCP protocol does not have a written specification and
+leaves a lot of detail to the server platform. Wildcards are expanded
+on the server. The simple design means that any wildcard specification
+supported by the server platform (such as brace expansion) can be
+used, but also leads to interoperability issues such as with filename
+quoting (for instance, where filenames contain spaces), and also the
+security issue described in \k{pscp-usage-basics}.