Avoid the use of class loading as it greatly complicates code analysis. If the application requires dynamic class loading, it should be well understood and documented. All classes that may be loaded should be predefined and avoid the use of dynamically created classes from byte arrays.

The class loader executes the static initializers when the class is loaded. A malicious attack may be hidden in the static initializer and therefore does not require the execution of a specific method. An attack may also be hidden in any other method in the dynamically loaded code. The use of dynamic code could also enable an attacker to insert an attack into an application after it has been deployed. The attack code would not be in the baseline, but loaded dynamically while the application is running.