A method including configuring a security device to store, in a database, a trusted fingerprint determined based at least in part on encrypting trusted connection information included in a trusted transmission packet received from a trusted source application; configuring the security device to determine a current fingerprint based at least in part on encrypting current connection information included in a current transmission packet received from a current source application; configuring the security device to compare the current fingerprint with the trusted fingerprint; and configuring the security device to process the current transmission packet based at least in part on a result of comparing the current fingerprint with the trusted fingerprint. Various other aspects are contemplated.