diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 6ba20ee1c..0010a8596 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -69,7 +69,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
       - name: run mvn clean package
         run: ./mvnw clean package -Ddependency-check.skip=true -Dmaven.test.skip=true
       - name: Perform CodeQL Analysis
diff --git a/.github/workflows/container_test.yml b/.github/workflows/container_test.yml
index c2cd20e93..69b4dca6a 100644
--- a/.github/workflows/container_test.yml
+++ b/.github/workflows/container_test.yml
@@ -23,7 +23,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
       - name: Navigate to test script and run
         run: cd .github/scripts && bash docker-create.sh -t
diff --git a/.github/workflows/dast-zap-test.yml b/.github/workflows/dast-zap-test.yml
index 25294ff14..10e5021cb 100644
--- a/.github/workflows/dast-zap-test.yml
+++ b/.github/workflows/dast-zap-test.yml
@@ -18,7 +18,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
       - name: Clean install
         run: ./mvnw --no-transfer-progress clean install -DskipTests -Ddependency-check.skip -Dcyclonedx.skip=true -Dexec.skip
       - name: Start wrongsecrets
diff --git a/.github/workflows/github-pages-preview.yml b/.github/workflows/github-pages-preview.yml
index 64133c431..43a438139 100644
--- a/.github/workflows/github-pages-preview.yml
+++ b/.github/workflows/github-pages-preview.yml
@@ -37,7 +37,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Build application (JAR only)
diff --git a/.github/workflows/java_swagger_doc.yml b/.github/workflows/java_swagger_doc.yml
index 72161f6b2..96f9e8542 100644
--- a/.github/workflows/java_swagger_doc.yml
+++ b/.github/workflows/java_swagger_doc.yml
@@ -18,7 +18,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
       - name: Clean install
         run: ./mvnw --no-transfer-progress clean install -DskipTests -Ddependency-check.skip -Dcyclonedx.skip=true -Dexec.skip
       - name: Compile javadoc
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 91f09caf5..d51ab547e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -29,7 +29,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
       - name: checkstyle with Maven
         run: ./mvnw --no-transfer-progress checkstyle:check
@@ -43,7 +43,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
       - name: spotbugs with Maven
         run: ./mvnw --no-transfer-progress package -DskipTests spotbugs:check
@@ -59,7 +59,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
       - name: Test with Maven
         run: ./mvnw --no-transfer-progress test
diff --git a/.github/workflows/master-container-publish.yml b/.github/workflows/master-container-publish.yml
index 4267e7798..ed6d3bc68 100644
--- a/.github/workflows/master-container-publish.yml
+++ b/.github/workflows/master-container-publish.yml
@@ -21,7 +21,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Extract version from pom.xml
diff --git a/.github/workflows/pr-preview.yml b/.github/workflows/pr-preview.yml
index aba2629ad..b9e4bfa92 100644
--- a/.github/workflows/pr-preview.yml
+++ b/.github/workflows/pr-preview.yml
@@ -29,7 +29,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Extract version from pom.xml
@@ -249,7 +249,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Extract PR version
@@ -278,7 +278,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Extract main version
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index ac703f48e..f5aa8936f 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -31,7 +31,7 @@ jobs:
           cache: "npm"
       - uses: actions/setup-java@v5
         with:
-          distribution: "oracle"
+          distribution: "temurin"
           java-version: "23"
       - name: Install npm dependencies
         run: npm install
diff --git a/.github/workflows/version-sync-check.yml b/.github/workflows/version-sync-check.yml
index aa8e140aa..6c1f70e65 100644
--- a/.github/workflows/version-sync-check.yml
+++ b/.github/workflows/version-sync-check.yml
@@ -20,7 +20,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Validate version consistency
diff --git a/.github/workflows/visual-diff.yml b/.github/workflows/visual-diff.yml
index a5c8b1d6d..a2be05f82 100644
--- a/.github/workflows/visual-diff.yml
+++ b/.github/workflows/visual-diff.yml
@@ -25,7 +25,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Extract PR version
@@ -53,7 +53,7 @@ jobs:
         uses: actions/setup-java@v5
         with:
           java-version: "23"
-          distribution: "oracle"
+          distribution: "temurin"
           cache: "maven"
 
       - name: Extract main version
diff --git a/src/main/java/org/owasp/wrongsecrets/challenges/ChallengesController.java b/src/main/java/org/owasp/wrongsecrets/challenges/ChallengesController.java
index 7516c2653..e3bd7f49e 100644
--- a/src/main/java/org/owasp/wrongsecrets/challenges/ChallengesController.java
+++ b/src/main/java/org/owasp/wrongsecrets/challenges/ChallengesController.java
@@ -5,6 +5,7 @@
 import com.google.common.base.Strings;
 import io.swagger.v3.oas.annotations.Hidden;
 import io.swagger.v3.oas.annotations.Operation;
+import jakarta.servlet.http.HttpServletRequest;
 import java.nio.charset.StandardCharsets;
 import java.security.InvalidKeyException;
 import java.security.NoSuchAlgorithmException;
@@ -203,7 +204,10 @@ public String reset(
   @PostMapping(value = "/challenge/{name}", params = "action=submit")
   @Operation(description = "Post your answer to the challenge for a given challenge")
   public String postController(
-      @ModelAttribute ChallengeForm challengeForm, Model model, @PathVariable String name) {
+      @ModelAttribute ChallengeForm challengeForm,
+      Model model,
+      @PathVariable String name,
+      HttpServletRequest request) {
     var challengeDefinition = findByShortName(name);
 
     if (!isChallengeEnabled(challengeDefinition)) {
@@ -223,8 +227,9 @@ public String postController(
         scoreCard.completeChallenge(challengeDefinition);
         // Send Slack notification for challenge completion
         if (slackNotificationService != null) {
+          String userAgent = request.getHeader("User-Agent");
           slackNotificationService.notifyChallengeCompletion(
-              challengeDefinition.name().shortName(), null);
+              challengeDefinition.name().shortName(), null, userAgent);
         }
         // TODO extract this to a separate method probably have separate handler classes in the
         // configuration otherwise this is not maintainable, probably give the challenge a CTF
diff --git a/src/main/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationService.java b/src/main/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationService.java
index 333e5db09..024166fbe 100644
--- a/src/main/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationService.java
+++ b/src/main/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationService.java
@@ -36,15 +36,16 @@ public SlackNotificationService(
    *
    * @param challengeName The name of the completed challenge
    * @param userName Optional username of the person who completed the challenge
+   * @param userAgent Optional user agent string from the HTTP request
    */
-  public void notifyChallengeCompletion(String challengeName, String userName) {
+  public void notifyChallengeCompletion(String challengeName, String userName, String userAgent) {
     if (!isSlackConfigured()) {
       logger.debug("Slack not configured, skipping notification for challenge: {}", challengeName);
       return;
     }
 
     try {
-      String message = buildCompletionMessage(challengeName, userName);
+      String message = buildCompletionMessage(challengeName, userName, userAgent);
       SlackMessage slackMessage = new SlackMessage(message);
 
       HttpHeaders headers = new HttpHeaders();
@@ -62,6 +63,16 @@ public void notifyChallengeCompletion(String challengeName, String userName) {
     }
   }
 
+  /**
+   * Sends a Slack notification when a challenge is completed (backward compatibility method).
+   *
+   * @param challengeName The name of the completed challenge
+   * @param userName Optional username of the person who completed the challenge
+   */
+  public void notifyChallengeCompletion(String challengeName, String userName) {
+    notifyChallengeCompletion(challengeName, userName, null);
+  }
+
   private boolean isSlackConfigured() {
     return challenge59.isPresent()
         && challenge59.get().getSlackWebhookUrl() != null
@@ -70,12 +81,16 @@ private boolean isSlackConfigured() {
         && challenge59.get().getSlackWebhookUrl().startsWith("https://hooks.slack.com");
   }
 
-  private String buildCompletionMessage(String challengeName, String userName) {
+  private String buildCompletionMessage(String challengeName, String userName, String userAgent) {
     String userPart = (userName != null && !userName.trim().isEmpty()) ? " by " + userName : "";
+    String userAgentPart =
+        (userAgent != null && !userAgent.trim().isEmpty())
+            ? " (User-Agent: " + userAgent + ")"
+            : "";
 
     return String.format(
-        "🎉 Challenge %s completed%s! Another secret vulnerability discovered in WrongSecrets.",
-        challengeName, userPart);
+        "🎉 Challenge %s completed%s%s! Another secret vulnerability discovered in WrongSecrets.",
+        challengeName, userPart, userAgentPart);
   }
 
   /** Simple record for Slack message payload. */
diff --git a/src/test/e2e/cypress.config.arcane.js b/src/test/e2e/cypress.config.arcane.js
index dd13852c9..4a9042768 100644
--- a/src/test/e2e/cypress.config.arcane.js
+++ b/src/test/e2e/cypress.config.arcane.js
@@ -10,6 +10,7 @@ module.exports = defineConfig({
     reporterOptions: {
       configFile: 'reporter-config.json'
     },
+    userAgent: 'Cypress WrongSecrets E2E Tests (Arcane)',
     setupNodeEvents (on, config) {
       // implement node event listeners here
     }
diff --git a/src/test/e2e/cypress.config.heroku.js b/src/test/e2e/cypress.config.heroku.js
index a6793c330..2ddceeb5c 100644
--- a/src/test/e2e/cypress.config.heroku.js
+++ b/src/test/e2e/cypress.config.heroku.js
@@ -10,6 +10,7 @@ module.exports = defineConfig({
     reporterOptions: {
       configFile: 'reporter-config.json'
     },
+    userAgent: 'Cypress WrongSecrets E2E Tests (Heroku)',
     setupNodeEvents (on, config) {
       // implement node event listeners here
     }
diff --git a/src/test/e2e/cypress.config.js b/src/test/e2e/cypress.config.js
index cd4942209..4adfae8b2 100644
--- a/src/test/e2e/cypress.config.js
+++ b/src/test/e2e/cypress.config.js
@@ -10,6 +10,7 @@ module.exports = defineConfig({
     reporterOptions: {
       configFile: 'reporter-config.json'
     },
+    userAgent: 'Cypress WrongSecrets E2E Tests',
     setupNodeEvents (on, config) {
       // implement node event listeners here
     }
diff --git a/src/test/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationServiceTest.java b/src/test/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationServiceTest.java
index 3402d3aa8..3ea174fc6 100644
--- a/src/test/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationServiceTest.java
+++ b/src/test/java/org/owasp/wrongsecrets/challenges/docker/SlackNotificationServiceTest.java
@@ -8,6 +8,7 @@
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.http.HttpEntity;
@@ -28,6 +29,77 @@ void setUp() {
     objectMapper = new ObjectMapper();
   }
 
+  @Test
+  void shouldSendNotificationWithUserAgentWhenSlackIsConfigured() {
+    // Given
+    String webhookUrl = "https://hooks.slack.com/services/T123456789/B123456789/abcdef123456";
+    String userAgent = "Mozilla/5.0 (Test Browser)";
+    when(challenge59.getSlackWebhookUrl()).thenReturn(webhookUrl);
+    when(restTemplate.postForEntity(anyString(), any(HttpEntity.class), eq(String.class)))
+        .thenReturn(ResponseEntity.ok("ok"));
+
+    slackNotificationService =
+        new SlackNotificationService(restTemplate, objectMapper, challenge59);
+
+    // When
+    slackNotificationService.notifyChallengeCompletion("challenge-1", "testuser", userAgent);
+
+    // Then
+    verify(restTemplate, times(1))
+        .postForEntity(eq(webhookUrl), any(HttpEntity.class), eq(String.class));
+  }
+
+  @Test
+  void shouldIncludeUserAgentInMessageWhenProvided() {
+    // Given
+    String webhookUrl = "https://hooks.slack.com/services/T123456789/B123456789/abcdef123456";
+    String userAgent = "Cypress WrongSecrets E2E Tests";
+    when(challenge59.getSlackWebhookUrl()).thenReturn(webhookUrl);
+    when(restTemplate.postForEntity(anyString(), any(HttpEntity.class), eq(String.class)))
+        .thenReturn(ResponseEntity.ok("ok"));
+
+    slackNotificationService =
+        new SlackNotificationService(restTemplate, objectMapper, challenge59);
+
+    // When
+    slackNotificationService.notifyChallengeCompletion("challenge-1", "testuser", userAgent);
+
+    // Then
+    ArgumentCaptor<HttpEntity> entityCaptor = ArgumentCaptor.forClass(HttpEntity.class);
+    verify(restTemplate, times(1))
+        .postForEntity(eq(webhookUrl), entityCaptor.capture(), eq(String.class));
+
+    HttpEntity capturedEntity = entityCaptor.getValue();
+    SlackNotificationService.SlackMessage slackMessage =
+        (SlackNotificationService.SlackMessage) capturedEntity.getBody();
+    assertTrue(slackMessage.getText().contains("(User-Agent: " + userAgent + ")"));
+  }
+
+  @Test
+  void shouldNotIncludeUserAgentInMessageWhenNotProvided() {
+    // Given
+    String webhookUrl = "https://hooks.slack.com/services/T123456789/B123456789/abcdef123456";
+    when(challenge59.getSlackWebhookUrl()).thenReturn(webhookUrl);
+    when(restTemplate.postForEntity(anyString(), any(HttpEntity.class), eq(String.class)))
+        .thenReturn(ResponseEntity.ok("ok"));
+
+    slackNotificationService =
+        new SlackNotificationService(restTemplate, objectMapper, challenge59);
+
+    // When
+    slackNotificationService.notifyChallengeCompletion("challenge-1", "testuser", null);
+
+    // Then
+    ArgumentCaptor<HttpEntity> entityCaptor = ArgumentCaptor.forClass(HttpEntity.class);
+    verify(restTemplate, times(1))
+        .postForEntity(eq(webhookUrl), entityCaptor.capture(), eq(String.class));
+
+    HttpEntity capturedEntity = entityCaptor.getValue();
+    SlackNotificationService.SlackMessage slackMessage =
+        (SlackNotificationService.SlackMessage) capturedEntity.getBody();
+    assertFalse(slackMessage.getText().contains("User-Agent"));
+  }
+
   @Test
   void shouldSendNotificationWhenSlackIsConfigured() {
     // Given