root@mainframe:~#
./sanitize_module --input "welcome.txt"
[*]
Running security filter...
[*]
Sanitized string: welcome.txt
root@mainframe:~#
cat /chall/downloads/welcome.txt
[*]
Status:
200 OK - File Successfully Read
========================================================================
BEGIN FILE DUMP
========================================================================
Knock, knock, hacker. The white rabbit is in another directory.