You mentioned MSysAccessObjects . This is a "system table" specific to Microsoft Access. Every database has a "brain" table that lists every other table it contains. If an attacker can read this, they get a map of the entire system—usernames, passwords, and credit card numbers included. 4. The Famous "Bobby Tables"
Your specific string uses UNION ALL . This is a clever way to stitch two different data tables together. By selecting NULL values, an attacker can probe a database to see how many columns a table has without causing a crash. It’s like feeling around a dark room to find where the furniture is before trying to steal the TV. 3. The "Hidden" Tables You mentioned MSysAccessObjects
In the early days of the web, databases were like polite librarians—they took your request and gave you exactly what you asked for. But in 1998, a researcher named Jeff Forristal discovered that if you "spoke" to the librarian in a specific way, you could trick them into handing over the keys to the entire library. 1. The "Magic" of the Single Quote If an attacker can read this, they get