diff --git a/lib/logger.js b/lib/logger.js
index b8583bb..0da25db 100644
--- a/lib/logger.js
+++ b/lib/logger.js
@@ -4,7 +4,20 @@ const { combine, timestamp, label, printf } = format;
 require('winston-daily-rotate-file');
 var config = require('./config').config;
 
-var sensitiveFields = ['cardCode', 'cardNumber', 'expirationDate', 'accountNumber', 'nameOnAccount', 'transactionKey', 'email', 'phoneNumber', 'faxNumber', 'dateOfBirth'];
+var sensitiveFields = [
+	// Payment card fields
+	'cardCode', 'cardNumber', 'expirationDate', 'accountNumber', 'nameOnAccount',
+	// Authentication credentials
+	'transactionKey', 'name', 'sessionToken', 'password', 'clientKey', 'accessToken',
+	// Personal information
+	'email', 'phoneNumber', 'faxNumber', 'dateOfBirth',
+	// Banking fields (eCheck)
+	'routingNumber',
+	// Magnetic stripe data (PCI-DSS SAD)
+	'track1', 'track2',
+	// Tokenization and 3D-Secure authentication
+	'cardholderAuthenticationValue', 'authenticationIndicator', 'dataValue', 'cryptogram'
+];
 
 const maskedLoggingFormat = printf(({ level, message, label, timestamp }) => {
 	if (isJson(message)) {