diff --git a/src/fr/devinsy/statoolinfos/core/Factory.java b/src/fr/devinsy/statoolinfos/core/Factory.java
index e81ccf7..6f82d9a 100644
--- a/src/fr/devinsy/statoolinfos/core/Factory.java
+++ b/src/fr/devinsy/statoolinfos/core/Factory.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 Christian Pierre MOMON <christian@momon.org>
+ * Copyright (C) 2020-2021 Christian Pierre MOMON <christian@momon.org>
  * 
  * This file is part of StatoolInfos, simple service statistics tool.
  * 
@@ -245,25 +245,33 @@ public class Factory
         {
             PathProperties properties = PathPropertyUtils.load(inputFile);
             result = new Organization(properties);
-            result.setInputFile(inputFile);
-            result.setInputURL(inputURL);
-            result.setLogoFileName(result.getTechnicalName() + "-logo" + StringUtils.defaultIfBlank(cache.getExtension(result.getLogoURL()), ".png"));
-
-            PathProperties subs = result.getByPrefix("subs");
-            for (PathProperty property : subs)
+            if (result.isValid())
             {
-                if (StringUtils.startsWith(property.getValue(), "http"))
+                result.setInputFile(inputFile);
+                result.setInputURL(inputURL);
+                result.setLogoFileName(result.getTechnicalName() + "-logo" + StringUtils.defaultIfBlank(cache.getExtension(result.getLogoURL()), ".png"));
+
+                PathProperties subs = result.getByPrefix("subs");
+                for (PathProperty property : subs)
                 {
-                    URL serviceInputURL = new URL(property.getValue());
-                    Service service = loadService(serviceInputURL, cache);
-                    if (service != null)
+                    if (StringUtils.startsWith(property.getValue(), "http"))
                     {
-                        service.setOrganization(result);
-                        service.setLogoFileName(result.getTechnicalName() + "-" + service.getLogoFileName());
-                        result.getServices().add(service);
+                        URL serviceInputURL = new URL(property.getValue());
+                        Service service = loadService(serviceInputURL, cache);
+                        if (service != null)
+                        {
+                            service.setOrganization(result);
+                            service.setLogoFileName(result.getTechnicalName() + "-" + service.getLogoFileName());
+                            result.getServices().add(service);
+                        }
                     }
                 }
             }
+            else
+            {
+                result = null;
+                logger.warn("WARNING: organization has invalid file [{}]", inputURL);
+            }
         }
 
         //
diff --git a/src/fr/devinsy/statoolinfos/core/Organization.java b/src/fr/devinsy/statoolinfos/core/Organization.java
index abb30b9..7795043 100644
--- a/src/fr/devinsy/statoolinfos/core/Organization.java
+++ b/src/fr/devinsy/statoolinfos/core/Organization.java
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2020 Christian Pierre MOMON <christian@momon.org>
+ * Copyright (C) 2020-2021 Christian Pierre MOMON <christian@momon.org>
  * 
  * This file is part of StatoolInfos, simple service statistics tool.
  * 
@@ -23,6 +23,7 @@ import java.net.MalformedURLException;
 import java.net.URL;
 import java.time.LocalDateTime;
 
+import org.apache.commons.codec.digest.DigestUtils;
 import org.apache.commons.lang3.StringUtils;
 
 import fr.devinsy.statoolinfos.properties.PathProperties;
@@ -58,15 +59,7 @@ public class Organization extends PathPropertyList
     public Organization(final PathProperties properties)
     {
         super(properties);
-
-        if ((properties == null) || (StringUtils.isBlank(properties.get("organization.name"))))
-        {
-            throw new IllegalArgumentException("Not an organization.");
-        }
-        else
-        {
-            this.services = new Services();
-        }
+        this.services = new Services();
     }
 
     /**
@@ -290,6 +283,19 @@ public class Organization extends PathPropertyList
 
         result = get("organization.name");
 
+        if (StringUtils.isBlank(result))
+        {
+            URL url = getInputURL();
+            if (url == null)
+            {
+                result = "anonymous";
+            }
+            else
+            {
+                result = DigestUtils.md5Hex(url.toString()).substring(0, 8);
+            }
+        }
+
         //
         return result;
     }
@@ -493,6 +499,29 @@ public class Organization extends PathPropertyList
         return result;
     }
 
+    /**
+     * Checks if is valid.
+     *
+     * @return true, if is valid
+     */
+    public boolean isValid()
+    {
+        boolean result;
+
+        // if (StringUtils.equalsIgnoreCase(get("file.class"), "organization"))
+        if (isEmpty())
+        {
+            result = false;
+        }
+        else
+        {
+            result = true;
+        }
+
+        //
+        return result;
+    }
+
     public void setFederation(final Federation federation)
     {
         this.federation = federation;