diff --git a/src/shared/account.py b/src/shared/account.py
index 601cccb..0210a79 100644
--- a/src/shared/account.py
+++ b/src/shared/account.py
@@ -1,5 +1,7 @@
+from allauth.core.exceptions import ImmediateHttpResponse
 from allauth.socialaccount.adapter import DefaultSocialAccountAdapter
 from allauth.socialaccount.models import SocialLogin
+from django.http import HttpResponseRedirect
 
 from dgsi.models import User
 
@@ -15,6 +17,16 @@ class SharedAccountAdapter(DefaultSocialAccountAdapter):
             case "ens_cas":
                 # In this case, the username is located in extra_data["uid"]
                 username = sociallogin.account.extra_data["uid"]
+
+                # Validate that the user is a regular one
+                home = sociallogin.account.extra_data["homeDirectory"].split("/")
+
+                if (home[1] != "users") or (
+                    home[2]
+                    in ["absint", "algo", "grecc", "guests", "spi", "spi1", "staffs"]
+                ):
+                    raise ImmediateHttpResponse(HttpResponseRedirect("/"))
+
             case "kanidm":
                 username = sociallogin.account.extra_data["preferred_username"]
             case _p: