diff --git a/app/models/issue.rb b/app/models/issue.rb
index 6e7f9a52c..5b1cfadb8 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -88,11 +88,19 @@ class Issue < ActiveRecord::Base
       when 'all'
         nil
       when 'default'
-        user_ids = [user.id] + user.groups.map(&:id)
-        "(#{table_name}.is_private = #{connection.quoted_false} OR #{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
+        if user.logged?
+          user_ids = [user.id] + user.groups.map(&:id)
+          "(#{table_name}.is_private = #{connection.quoted_false} OR #{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
+        else
+          "(#{table_name}.is_private = #{connection.quoted_false})"
+        end
       when 'own'
-        user_ids = [user.id] + user.groups.map(&:id)
-        "(#{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
+        if user.logged?
+          user_ids = [user.id] + user.groups.map(&:id)
+          "(#{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
+        else
+          '1=0'
+        end
       else
         '1=0'
       end
@@ -106,9 +114,9 @@ class Issue < ActiveRecord::Base
       when 'all'
         true
       when 'default'
-        !self.is_private? || self.author == user || user.is_or_belongs_to?(assigned_to)
+        !self.is_private? || (user.logged? && (self.author == user || user.is_or_belongs_to?(assigned_to)))
       when 'own'
-        self.author == user || user.is_or_belongs_to?(assigned_to)
+        user.logged? && (self.author == user || user.is_or_belongs_to?(assigned_to))
       else
         false
       end
diff --git a/test/unit/issue_test.rb b/test/unit/issue_test.rb
index 05224701d..fc08313bc 100644
--- a/test/unit/issue_test.rb
+++ b/test/unit/issue_test.rb
@@ -25,7 +25,7 @@ class IssueTest < ActiveSupport::TestCase
            :versions,
            :issue_statuses, :issue_categories, :issue_relations, :workflows,
            :enumerations,
-           :issues,
+           :issues, :journals, :journal_details,
            :custom_fields, :custom_fields_projects, :custom_fields_trackers, :custom_values,
            :time_entries
 
@@ -105,18 +105,6 @@ class IssueTest < ActiveSupport::TestCase
     assert_visibility_match User.anonymous, issues
   end
 
-  def test_visible_scope_for_anonymous_with_own_issues_visibility
-    Role.anonymous.update_attribute :issues_visibility, 'own'
-    Issue.create!(:project_id => 1, :tracker_id => 1,
-                  :author_id => User.anonymous.id,
-                  :subject => 'Issue by anonymous')
-
-    issues = Issue.visible(User.anonymous).all
-    assert issues.any?
-    assert_nil issues.detect {|issue| issue.author != User.anonymous}
-    assert_visibility_match User.anonymous, issues
-  end
-
   def test_visible_scope_for_anonymous_without_view_issues_permissions
     # Anonymous user should not see issues without permission
     Role.anonymous.remove_permission!(:view_issues)
@@ -125,6 +113,20 @@ class IssueTest < ActiveSupport::TestCase
     assert_visibility_match User.anonymous, issues
   end
 
+  def test_anonymous_should_not_see_private_issues_with_issues_visibility_set_to_default
+    assert Role.anonymous.update_attribute(:issues_visibility, 'default')
+    issue = Issue.generate_for_project!(Project.find(1), :author => User.anonymous, :assigned_to => User.anonymous, :is_private => true)
+    assert_nil Issue.where(:id => issue.id).visible(User.anonymous).first
+    assert !issue.visible?(User.anonymous)
+  end
+
+  def test_anonymous_should_not_see_private_issues_with_issues_visibility_set_to_own
+    assert Role.anonymous.update_attribute(:issues_visibility, 'own')
+    issue = Issue.generate_for_project!(Project.find(1), :author => User.anonymous, :assigned_to => User.anonymous, :is_private => true)
+    assert_nil Issue.where(:id => issue.id).visible(User.anonymous).first
+    assert !issue.visible?(User.anonymous)
+  end
+
   def test_visible_scope_for_non_member
     user = User.find(9)
     assert user.projects.empty?