diff --git a/docs/unsure-where-to-put/adr_star_activity.md b/docs/unsure-where-to-put/adr_star_activity.md
index b41e582aae..07af33ea8e 100644
--- a/docs/unsure-where-to-put/adr_star_activity.md
+++ b/docs/unsure-where-to-put/adr_star_activity.md
@@ -3,11 +3,11 @@
 {@context [
     "as":    "https://www.w3.org/ns/activitystreams#",
     "forge": "https://forgefed.org/ns#",],
-  ::as/id "https://repo.prod.meissa.de/api/activitypub/user-id/1/outbox/12345",
+  ::as/id "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1/outbox/12345",
   ::as/type "Star",
   ::forge/source "forgejo",
-  ::as/actor "https://repo.prod.meissa.de/api/activitypub/user-id/1",
-  ::as/object "https://codeberg.org/api/activitypub/repository-id/12"
+  ::as/actor "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1",
+  ::as/object "https://codeberg.org/api/v1/activitypub/repository-id/12"
 }
 
 # json notation
diff --git a/docs/unsure-where-to-put/dev-notes.md b/docs/unsure-where-to-put/dev-notes.md
index 7f1d797569..afb7e457f2 100644
--- a/docs/unsure-where-to-put/dev-notes.md
+++ b/docs/unsure-where-to-put/dev-notes.md
@@ -103,3 +103,5 @@ git reset --hard origin/forgejo-federated-star
 # generate swagger api client
 
 go run github.com/go-swagger/go-swagger/cmd/swagger@v0.30.5 generate client -f './templates/swagger/v1_json.tmpl' -c "modules/activitypub2" --operation 'activitypubPerson' --skip-models --existing-models 'github.com/go-ap/activitypub' --skip-validation
+
+# Documentation for learn & reference
\ No newline at end of file
diff --git a/docs/unsure-where-to-put/star_activity.md b/docs/unsure-where-to-put/star_activity.md
deleted file mode 100644
index ac6871e593..0000000000
--- a/docs/unsure-where-to-put/star_activity.md
+++ /dev/null
@@ -1,22 +0,0 @@
-```mermaid
-sequenceDiagram
-    participant fs as foreign_repository_server
-    participant os as our_repository_server
-
-    fs ->> os: post /api/activitypub/repository-id/1/inbox {Start-Activity}
-    activate os
-    os ->> os: validate request inputs
-    activate repository
-    os ->> repository: validate
-    repository ->> repository: search for reop with object-id
-    deactivate repository
-    activate person
-    os ->> person: validate
-    person ->> person: search for ser with actor-id
-    person ->> fs: get /api/activitypub/user-id/{id from actor}
-    person ->> person: create user from response
-    deactivate person
-    os ->> repository: execute star action
-    os -->> fs: 200 ok
-    deactivate os
-```
\ No newline at end of file
diff --git a/docs/unsure-where-to-put/threat_analysis_star_activity.md b/docs/unsure-where-to-put/threat_analysis_star_activity.md
new file mode 100644
index 0000000000..33c67db24b
--- /dev/null
+++ b/docs/unsure-where-to-put/threat_analysis_star_activity.md
@@ -0,0 +1,95 @@
+# Threat analysis for the federated star activity
+
+## Technical Background
+### Control Flow
+
+```mermaid
+sequenceDiagram
+    participant fs as foreign_repository_server
+    participant os as our_repository_server
+
+    fs ->> os: post /api/activitypub/repository-id/1/inbox {Start-Activity}
+    activate os
+    os ->> os: validate request inputs
+    activate repository
+    os ->> repository: validate
+    repository ->> repository: search for reop with object-id
+    deactivate repository
+    activate person
+    os ->> person: validate
+    person ->> person: search for ser with actor-id
+    person ->> fs: get /api/activitypub/user-id/{id from actor}
+    person ->> person: create user from response
+    deactivate person
+    os ->> repository: execute star action
+    os -->> fs: 200 ok
+    deactivate os
+```
+
+### Data transfered
+
+```
+# edn notation
+{@context [
+    "as":    "https://www.w3.org/ns/activitystreams#",
+    "forge": "https://forgefed.org/ns#",],
+  ::as/id "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1/outbox/12345",
+  ::as/type "Star",
+  ::forge/source "forgejo",
+  ::as/actor "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1",
+  ::as/object "https://codeberg.org/api/v1/activitypub/repository-id/12"
+}
+
+# json notation
+{"id": "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1/outbox/12345",
+  "type": "Star",
+  "source": "forgejo",
+  "actor": "https://repo.prod.meissa.de/api/v1/activitypub/user-id/1",
+  "object": "https://codeberg.org/api/v1/activitypub/repository-id/1"
+}
+```
+
+### Data Flow
+
+```mermaid
+flowchart TD
+    A(User) --> |stars a federated repository| B(foreign repository server)
+    B --> |Star Activity| C(our repository server)
+    C --> |get repository localy| D(our repos database)
+	C --> |get Person Actor| B
+    C --> |create federated user localy| D
+    C --> |add star to repo localy| D    
+```
+
+## Analysis
+### Assets
+
+1. **Service Availability**: The availability of our or foreign servers.
+2. **Reputation**: Our standing against freinds and others.
+
+### Actors
+
+1. **Script Kiddies**: Boored teens, willing to do some illigal without deep knowlege of tech details but broad knowlege across internet discussions. Able to do some bash / python scripting.
+
+### Threat
+
+1. Script Kiddi sends a Star Activity containing an attack target url `http://attacked.target/very/special/path` in place of actor. Our repository server sends an `get Person Actor` request to this url. The attacked target gets DenialdOffServices. We loose CPU & reputation.
+
+### DREAD-Score
+
+| Threat | Damage  | Reproducibility | Exploitability | Affected Users | Discoverability | Mitigations |
+| :----- | :------ | :-------------- | :------------- | :------------- | :-------------- | :---------- |
+| 1.     | ... tbd |                 |                |                |                 |             |
+| 2.     | ... tbd |                 |                |                |                 |             |
+
+Bewertet wird mit Schulnoten von 1 - 6
+
+* Damage – wie groß wäre der Schaden, wenn der Angriff erfolgreich ist? 6 ist ein sehr schlimmer Schaden.
+* Reproducibility – wie einfach wäre der Angriff reproduzierbar? 6 ist sehr einfach zu reproduzieren.
+* Exploitability – wieviel Zeit, Aufwand und Erfahrung sind notwendig, um die Bedrohung auszunutzen? 6 ist sehr einfach zu machen.
+* Affected Users – wenn eine Bedrohung ausgenutzt werden würde, wieviel Prozent der Benutzer wären betroffen?
+* Discoverability – Wie einfach lässt sich ein Angriff entdecken? Muss der Angreifer Strafverfolgung erwarten? 6 ist sehr schwer zu entdecken / ist gar nicht illegal
+
+## Reference
+
+* https://geballte-sicherheit.de/threat-modelling-bedrohungsanalyse-7-teil-einstufung-von-bedrohungen-ranking-of-threats/
\ No newline at end of file