diff --git a/Foundation.hs b/Foundation.hs
index fbf4738..c71b2f8 100644
--- a/Foundation.hs
+++ b/Foundation.hs
@@ -175,6 +175,7 @@ instance YesodAuth App where
                     , userName = Nothing
                     , userIsAdmin = False
                     , userLocalId = Nothing
+                    , userIsAnonymous = Just False
                     }
 
     -- You can add other plugins like BrowserID, email or OAuth here
diff --git a/Handler/ShowChallenge.hs b/Handler/ShowChallenge.hs
index 816dafb..926e9b7 100644
--- a/Handler/ShowChallenge.hs
+++ b/Handler/ShowChallenge.hs
@@ -123,7 +123,8 @@ getSubmission repoId commit challengeId description chan = do
         submissionChallenge=challengeId,
         submissionDescription=description,
         submissionStamp=time,
-        submissionSubmitter=userId }
+        submissionSubmitter=userId,
+        submissionIsPublic=Just False }
 
 getOuts :: Channel -> Key Submission -> Handler ([Out])
 getOuts chan submissionId = do
diff --git a/config/models b/config/models
index d52533d..a9190fa 100644
--- a/config/models
+++ b/config/models
@@ -3,8 +3,9 @@ User
     password Text Maybe
     UniqueUser ident
     name Text Maybe
-    isAdmin Bool default=True
+    isAdmin Bool default=False
     localId Text Maybe
+    isAnonymous Bool Maybe
     deriving Typeable
 PublicKey
     user UserId
@@ -46,6 +47,7 @@ Submission
     description Text
     stamp UTCTime default=now()
     submitter UserId
+    isPublic Bool Maybe
     UniqueSubmissionRepoCommitChallenge repo commit challenge
 Fork
     source SubmissionId