diff --git a/app/models/communication/extranet.rb b/app/models/communication/extranet.rb
index 79fd80fe035455e1efacfcc71a004b221fe34ad1..e4a52332b9a907f1716fa465a7eea38306c264b1 100644
--- a/app/models/communication/extranet.rb
+++ b/app/models/communication/extranet.rb
@@ -33,6 +33,8 @@
 #  fk_rails_c2268c7ebd  (university_id => universities.id)
 #
 class Communication::Extranet < ApplicationRecord
+  self.filter_attributes += [:sso_cert]
+
   include WithAbouts
   include WithLegal
   include WithSso
diff --git a/app/models/communication/website.rb b/app/models/communication/website.rb
index d0ceb1f691d281dfc9e88149ab3b59f7d52d0043..1b53a75e6d9bf2694d9863c29c498d96b3a6ff00 100644
--- a/app/models/communication/website.rb
+++ b/app/models/communication/website.rb
@@ -30,6 +30,8 @@
 #  fk_rails_bb6a496c08  (university_id => universities.id)
 #
 class Communication::Website < ApplicationRecord
+  self.filter_attributes += [ :access_token ]
+
   include WithUniversity
   include WithAbouts
   include WithConfigs
diff --git a/app/models/university.rb b/app/models/university.rb
index a8c36a09128387baa3cf16757c028b5b090e7b0a..d839b84370205d64e17a16f550aa6371139ca52f 100644
--- a/app/models/university.rb
+++ b/app/models/university.rb
@@ -27,6 +27,8 @@
 #  updated_at                 :datetime         not null
 #
 class University < ApplicationRecord
+  self.filter_attributes += [:sso_cert]
+
   include WithPeopleAndOrganizations
   include WithCommunication
   include WithEducation