1. It accidentally exposes internal variables by not utilizing the `var` keyword to restrict variable scope.
2. It utilizes "lax" equivalence/inequivalence check operators.
Accidentally globally scoping variables allows any object that has access to the page to "see" the contents of these variables. If they include sensitive information, such as cookie values, an attacker with access to the page could see these exposed values. Additionally, globally scoped variables can introduce accidental errors into a program, as they may accidentally "overwrite" a global variable used by another program, or have their values overwritten by the same.