Common and how developers prevent them?
The characters following the word "MEGA" represent a common pattern used in database security audits:
: This command tells the database to "pause" for a specific number of seconds (in this case, zero). Security researchers use this to see if the server's response time changes, which helps them determine if the database is executing their commands.
: This is used to break out of a text field in a database query.
: These are "comments" in code, used here to bypass simple security filters that might block spaces. Security and MEGA