--- /dev/null
+# Flash - Macromedia Flash.
+# Pattern quality: good veryfast
+# Protocol groups: file
+#
+# To discuss this pattern:
+# http://lists.sourceforge.net/lists/listinfo/l7-filter-developers
+
+# Thanks to Brandon Enright {bmenrigh AT ucsd.edu}
+
+# Macromedia spec:
+# http://download.macromedia.com/pub/flash/flash_file_format_specification.pdf
+
+flash
+# As of flash 6 SWF files can be compressed. Flash 8 will be out soon
+# (end of 2005?) so this pattern prepares for that. It assumes that
+# no major changes will be made to the format.
+^[FC]WS[\x01-\x08]