diff --git a/TravelBuddyApp/pom.xml b/TravelBuddyApp/pom.xml
index 07fc4aa..ea06a2e 100644
--- a/TravelBuddyApp/pom.xml
+++ b/TravelBuddyApp/pom.xml
@@ -5,7 +5,7 @@
 	<groupId>hs-mannheim.de </groupId>
 	<artifactId>TravelBuddyApp</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
-	
+
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<maven.compiler.source>21</maven.compiler.source>
@@ -24,6 +24,16 @@
 			<version>5.8.1</version>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.json</groupId>
+			<artifactId>json</artifactId>
+			<version>20210307</version>
+		</dependency>
+		<dependency>
+			<groupId>commons-codec</groupId>
+			<artifactId>commons-codec</artifactId>
+			<version>1.15</version>
+		</dependency>
 	</dependencies>
 	<build>
 		<plugins>
@@ -84,6 +94,7 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-pmd-plugin</artifactId>
 				<version>3.22.0</version>
+
 				<executions>
 					<execution>
 						<phase>verify</phase>
diff --git a/TravelBuddyApp/src/main/java/domain/User.java b/TravelBuddyApp/src/main/java/domain/User.java
index 6e60c4e..fc3daef 100644
--- a/TravelBuddyApp/src/main/java/domain/User.java
+++ b/TravelBuddyApp/src/main/java/domain/User.java
@@ -1,22 +1,16 @@
 package domain;
 
 import java.io.BufferedReader;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
 import java.io.PrintWriter;
-import java.io.Serializable;
-import java.util.ArrayList;
-import java.util.List;
+import org.apache.commons.codec.digest.DigestUtils;
 
-public class User implements Serializable{
+public class User {
 
 	private String username;
-	private String password;
+	private String hashedPassword;
 	private Ort heimatstandort;
 	private Auto auto;
 	private double durchschnittsgeschwindigkeitPKW;
@@ -24,14 +18,19 @@ public class User implements Serializable{
 
 	public User(String username, String password, Ort heimatstandort, Auto auto, double durchschnittsgeschwindigkeitPKW,
 			double durchschnittsgeschwindigkeitFahrrad) {
+		
 		this.username = username;
-		this.password = password;
+		this.hashedPassword = hashPassword(password);
 		this.heimatstandort = heimatstandort;
 		this.auto = auto;
 		this.durchschnittsgeschwindigkeitPKW = durchschnittsgeschwindigkeitPKW;
 		this.durchschnittsgeschwindigkeitFahrrad = durchschnittsgeschwindigkeitFahrrad;
 	}
 
+	private String hashPassword(String password) {
+		return DigestUtils.sha256Hex(password); // Hash-Funktion verwenden
+	}
+
 	public String getUsername() {
 		return username;
 	}
@@ -40,12 +39,12 @@ public class User implements Serializable{
 		this.username = username;
 	}
 
-	public String getPassword() {
-		return password;
+	public String getHashedPassword() {
+		return hashedPassword;
 	}
 
 	public void setPassword(String password) {
-		this.password = password;
+		this.hashedPassword = hashPassword(password); // Passwort hashen beim Setzen
 	}
 
 	public Ort getHeimatstandort() {
@@ -83,9 +82,9 @@ public class User implements Serializable{
 	public void registrieren() {
 
 		try (PrintWriter writer = new PrintWriter(new FileWriter("users.txt", true))) {
-			writer.println(username + "," + password + "," + heimatstandort.getPLZ() + "," + heimatstandort.getOrtName()
-					+ "," + auto.getName() + "," + auto.getCO2AusstossProKm() + "," + durchschnittsgeschwindigkeitPKW
-					+ "," + durchschnittsgeschwindigkeitFahrrad);
+			writer.println(username + "," + hashedPassword + "," + heimatstandort.getPLZ() + ","
+					+ heimatstandort.getOrtName() + "," + auto.getName() + "," + auto.getCO2AusstossProKm() + ","
+					+ durchschnittsgeschwindigkeitPKW + "," + durchschnittsgeschwindigkeitFahrrad);
 		} catch (IOException e) {
 			e.printStackTrace();
 		}
@@ -98,8 +97,7 @@ public class User implements Serializable{
 			String line;
 			while ((line = reader.readLine()) != null) {
 				String[] parts = line.split(",");
-				if (parts[0].equals(username) && parts[1].equals(password)) {
-					// Benutzerdaten laden
+				if (parts[0].equals(username) && parts[1].equals(hashedPassword)) {
 					this.heimatstandort = new Ort(parts[2], parts[3]);
 					this.auto = new Auto(parts[4], Double.parseDouble(parts[5]));
 					this.durchschnittsgeschwindigkeitPKW = Double.parseDouble(parts[6]);
@@ -113,7 +111,6 @@ public class User implements Serializable{
 		return false;
 	}
 
-	
 	public String zeigeWetterHeimatstandort() {
 		try {
 			return WetterService.getAktuellesWetter(heimatstandort.getOrtName());
@@ -122,7 +119,6 @@ public class User implements Serializable{
 		}
 	}
 
-	
 	public String zeigeWettervorhersageHeimatstandort() {
 		try {
 			return WetterService.getWettervorhersage(heimatstandort.getOrtName());
@@ -130,23 +126,5 @@ public class User implements Serializable{
 			return "Fehler beim Abrufen der Wettervorhersage: " + e.getMessage();
 		}
 	}
-	
-	
-	private void saveUsers(List<User> users) {
-        try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("users.ser"))) {
-            oos.writeObject(users);
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-    }
-
- 
-	private List<User> loadUsers() {
-        try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream("users.ser"))) {
-            return (List<User>) ois.readObject();
-        } catch (IOException | ClassNotFoundException e) {
-            return new ArrayList<>();
-        }
-    }
 
 }