diff --git a/backend/src/controllers/Credentials.php b/backend/src/controllers/Credentials.php
index 74bb014..d4ad9c6 100644
--- a/backend/src/controllers/Credentials.php
+++ b/backend/src/controllers/Credentials.php
@@ -81,4 +81,28 @@ class Credentials
             return $res->withJson(['error' => 'The provided key is invalid.'], 400);
         }
     }
+
+    public function delete(Request $req, Response $res, array $args)
+    {
+        $userId = $req->getAttribute('userId');
+        $recordId = intval($args['recordId']);
+        $credentialId = intval($args['credentialId']);
+
+        $ac = new \Operations\AccessControl($this->c);
+        if (!$ac->canAccessRecord($userId, $recordId)) {
+            $this->logger->info('User tries to delete credential without permissions.');
+            return $res->withJson(['error' => 'You have no permission for this record'], 403);
+        }
+
+        $credentials = new \Operations\Credentials($this->c);
+
+        try {
+            $credentials->deleteCredential($recordId, $credentialId);
+
+            $this->logger->info('Deleted credential', ['id' => $credentialId]);
+            return $res->withStatus(204);
+        } catch (\Exceptions\NotFoundException $e) {
+            return $res->withJson(['error' => 'No credential found for id ' . $credentialId], 404);
+        }
+    }
 }
diff --git a/backend/src/operations/Credentials.php b/backend/src/operations/Credentials.php
index 710ab0a..2f5073d 100644
--- a/backend/src/operations/Credentials.php
+++ b/backend/src/operations/Credentials.php
@@ -111,6 +111,39 @@ class Credentials
             unset($record['security']);
         }
 
+        $this->db->commit();
+
         return $record;
     }
+
+    /**
+     * Delete credential
+     * 
+     * @param   $recordId       Id of the record
+     * @param   $credentialId   Id of the credential to delete
+     * 
+     * @return  void
+     * 
+     * @throws  NotFoundException   if credential does not exist
+     */
+    public function deleteCredential(int $recordId, int $credentialId) : void
+    {
+        $this->db->beginTransaction();
+
+        $query = $this->db->prepare('SELECT id FROM remote WHERE id=:id AND record=:record');
+        $query->bindValue(':id', $credentialId, \PDO::PARAM_INT);
+        $query->bindValue(':record', $recordId, \PDO::PARAM_INT);
+        $query->execute();
+
+        if ($query->fetch() === false) { //Credential does not exist
+            $this->db->rollBack();
+            throw new \Exceptions\NotFoundException();
+        }
+
+        $query = $this->db->prepare('DELETE FROM remote WHERE id=:id');
+        $query->bindValue(':id', $id, \PDO::PARAM_INT);
+        $query->execute();
+
+        $this->db->commit();
+    }
 }
diff --git a/backend/src/operations/Domains.php b/backend/src/operations/Domains.php
index 81c0330..6306e48 100644
--- a/backend/src/operations/Domains.php
+++ b/backend/src/operations/Domains.php
@@ -194,6 +194,8 @@ class Domains
         $query = $this->db->prepare('DELETE FROM records WHERE domain_id=:id');
         $query->bindValue(':id', $id, \PDO::PARAM_INT);
         $query->execute();
+
+        $this->db->commit();
     }
 
     /**
diff --git a/backend/src/operations/Records.php b/backend/src/operations/Records.php
index e82540a..5e07fef 100644
--- a/backend/src/operations/Records.php
+++ b/backend/src/operations/Records.php
@@ -214,6 +214,8 @@ class Records
         $query = $this->db->prepare('DELETE FROM records WHERE id=:id');
         $query->bindValue(':id', $id, \PDO::PARAM_INT);
         $query->execute();
+
+        $this->db->commit();
     }
 
     /**
diff --git a/backend/src/public/index.php b/backend/src/public/index.php
index 1c79f4a..e6e65a1 100644
--- a/backend/src/public/index.php
+++ b/backend/src/public/index.php
@@ -44,6 +44,7 @@ $app->group('/v1', function () {
 
         $this->get('/records/{recordId}/credentials', '\Controllers\Credentials:getList');
         $this->post('/records/{recordId}/credentials', '\Controllers\Credentials:postNew');
+        $this->delete('/records/{recordId}/credentials/{credentialId}', '\Controllers\Credentials:delete');
     })->add('\Middlewares\Authentication');
 });
 
diff --git a/backend/test/tests/credentials-crud.js b/backend/test/tests/credentials-crud.js
index b29a0cd..002a349 100644
--- a/backend/test/tests/credentials-crud.js
+++ b/backend/test/tests/credentials-crud.js
@@ -99,6 +99,29 @@ test.run(async function () {
             type: 'password',
         }, 'Adding credential data fail.');
 
+        //Delete entry
+        var res = await req({
+            url: '/records/1/credentials/4',
+            method: 'delete'
+        });
+
+        assert.equal(res.status, 204, 'Deletion of entry should succeed.');
+
+        //Delete not existing entry
+        var res = await req({
+            url: '/records/1/credentials/100',
+            method: 'delete'
+        });
+
+        assert.equal(res.status, 404, 'Deletion of not existing entry should fail.');
+
+        //Delete entry via wrong record
+        var res = await req({
+            url: '/records/4/credentials/5',
+            method: 'delete'
+        });
+
+        assert.equal(res.status, 404, 'Deletion of entry via wrong record should fail.');
 
     });
 
@@ -133,5 +156,21 @@ test.run(async function () {
             description: 'Test Password',
             type: 'password',
         }, 'Adding credential data fail.');
+
+        //Delete entry
+        var res = await req({
+            url: '/records/1/credentials/6',
+            method: 'delete'
+        });
+
+        assert.equal(res.status, 204, 'Deletion of entry should succeed for user.');
+
+        //Delete entry without permission
+        var res = await req({
+            url: '/records/4/credentials/2',
+            method: 'delete'
+        });
+
+        assert.equal(res.status, 403, 'Deletion of entry without permission should fail.');
     });
 });
\ No newline at end of file
diff --git a/backend/test/tests/domains-crud.js b/backend/test/tests/domains-crud.js
index a01f75f..b1e3576 100644
--- a/backend/test/tests/domains-crud.js
+++ b/backend/test/tests/domains-crud.js
@@ -205,11 +205,11 @@ test.run(async function () {
 
         //Delete existing domain
         var res = await req({
-            url: '/domains/1',
+            url: '/domains/8',
             method: 'delete'
         });
 
-        assert.equal(res.status, 204, 'Deletion of domain 1 should be successfull.');
+        assert.equal(res.status, 204, 'Deletion of domain 8 should be successfull.');
     });
 
     await test('user', async function (assert, req) {