diff --git a/redash/handlers/query_results.py b/redash/handlers/query_results.py
index 815a7a154d..28f8485b8b 100644
--- a/redash/handlers/query_results.py
+++ b/redash/handlers/query_results.py
@@ -12,7 +12,7 @@
 from redash.tasks.queries import enqueue_query
 from redash.utils import (collect_parameters_from_request, gen_query_hash, json_dumps, utcnow, to_filename)
 from redash.models.parameterized_query import ParameterizedQuery, InvalidParameterError, dropdown_values
-from redash.serializers import serialize_query_result_to_csv, serialize_query_result_to_xlsx
+from redash.serializers import serialize_query_result, serialize_query_result_to_csv, serialize_query_result_to_xlsx
 
 
 def error_response(message):
@@ -42,7 +42,7 @@ def run_query(query, parameters, data_source, query_id, max_age=0):
         query_result = models.QueryResult.get_latest(data_source, query.text, max_age)
 
     if query_result:
-        return {'query_result': query_result.to_dict()}
+        return {'query_result': serialize_query_result(query_result, current_user.is_api_user())}
     else:
         job = enqueue_query(query.text, data_source, current_user.id, current_user.is_api_user(), metadata={
             "Username": repr(current_user) if current_user.is_api_user() else current_user.email,
diff --git a/redash/serializers/__init__.py b/redash/serializers/__init__.py
index ba51ad0eb1..9223aaaac4 100644
--- a/redash/serializers/__init__.py
+++ b/redash/serializers/__init__.py
@@ -12,7 +12,7 @@
 from redash.utils import json_loads
 from redash.models.parameterized_query import ParameterizedQuery
 
-from .query_result import serialize_query_result_to_csv, serialize_query_result_to_xlsx
+from .query_result import serialize_query_result, serialize_query_result_to_csv, serialize_query_result_to_xlsx
 
 
 def public_widget(widget):
diff --git a/redash/serializers/query_result.py b/redash/serializers/query_result.py
index 3a6dd7e123..32eef9789f 100644
--- a/redash/serializers/query_result.py
+++ b/redash/serializers/query_result.py
@@ -1,7 +1,7 @@
 import cStringIO
 import csv
 import xlsxwriter
-from funcy import rpartial
+from funcy import rpartial, project
 from dateutil.parser import isoparse as parse_date
 from redash.utils import json_loads, UnicodeWriter
 from redash.query_runner import (TYPE_BOOLEAN, TYPE_DATE, TYPE_DATETIME)
@@ -57,6 +57,14 @@ def _get_column_lists(columns):
     return fieldnames, special_columns
 
 
+def serialize_query_result(query_result, is_api_user):
+    if is_api_user:
+        publicly_needed_keys = ['data', 'retrieved_at']
+        return project(query_result.to_dict(), publicly_needed_keys)
+    else:
+        return query_result.to_dict()
+
+
 def serialize_query_result_to_csv(query_result):
     s = cStringIO.StringIO()
 
diff --git a/tests/serializers/test_query_results.py b/tests/serializers/test_query_results.py
index ff77d20646..3f9e7d0381 100644
--- a/tests/serializers/test_query_results.py
+++ b/tests/serializers/test_query_results.py
@@ -6,7 +6,7 @@
 
 from redash import models
 from redash.utils import utcnow, json_dumps
-from redash.serializers import serialize_query_result_to_csv
+from redash.serializers import serialize_query_result, serialize_query_result_to_csv
 
 
 data = {
@@ -24,6 +24,19 @@
     ]
 }
 
+class QueryResultSerializationTest(BaseTestCase):
+    def test_serializes_all_keys_for_authenticated_users(self):
+        query_result = self.factory.create_query_result(data=json_dumps({}))
+        serialized = serialize_query_result(query_result, False)
+        self.assertSetEqual(set(query_result.to_dict().keys()),
+                            set(serialized.keys()))
+
+    def test_doesnt_serialize_sensitive_keys_for_unauthenticated_users(self):
+        query_result = self.factory.create_query_result(data=json_dumps({}))
+        serialized = serialize_query_result(query_result, True)
+        self.assertSetEqual(set(['data', 'retrieved_at']),
+                            set(serialized.keys()))
+
 class CsvSerializationTest(BaseTestCase):
     def get_csv_content(self):
         query_result = self.factory.create_query_result(data=json_dumps(data))