diff --git a/Cargo.lock b/Cargo.lock
index adcffea..d08a044 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -612,6 +612,40 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
+[[package]]
+name = "env_logger"
+version = "0.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85cdab6a89accf66733ad5a1693a4dcced6aeff64602b634530dd73c1f3ee9f0"
+dependencies = [
+ "humantime",
+ "is-terminal",
+ "log",
+ "regex",
+ "termcolor",
+]
+
+[[package]]
+name = "errno"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f639046355ee4f37944e44f60642c6f3a7efa3cf6b78c78a0d989a8ce6c396a1"
+dependencies = [
+ "errno-dragonfly",
+ "libc",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "errno-dragonfly"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "event-listener"
 version = "2.5.3"
@@ -958,6 +992,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed44880c466736ef9a5c5b5facefb5ed0785676d0c02d612db14e54f0d84286"
+
 [[package]]
 name = "hex"
 version = "0.4.3"
@@ -1022,6 +1062,12 @@ version = "1.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "02296996cb8796d7c6e3bc2d9211b7802812d36999a51bb754123ead7d37d026"
 
+[[package]]
+name = "humantime"
+version = "2.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
+
 [[package]]
 name = "hyper"
 version = "0.14.24"
@@ -1152,6 +1198,16 @@ dependencies = [
  "cfg-if 1.0.0",
 ]
 
+[[package]]
+name = "io-lifetimes"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1abeb7a0dd0f8181267ff8adc397075586500b81b28a73e8a0208b00fc170fb3"
+dependencies = [
+ "libc",
+ "windows-sys 0.45.0",
+]
+
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -1161,6 +1217,18 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "is-terminal"
+version = "0.4.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "21b6b32576413a8e69b90e952e4a026476040d81017b80445deda5f2d3921857"
+dependencies = [
+ "hermit-abi 0.3.1",
+ "io-lifetimes",
+ "rustix",
+ "windows-sys 0.45.0",
+]
+
 [[package]]
 name = "itertools"
 version = "0.10.5"
@@ -1242,6 +1310,12 @@ dependencies = [
  "cc",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f051f77a7c8e6957c0696eac88f26b0117e54f52d3fc682ab19397a8812846a4"
+
 [[package]]
 name = "lock_api"
 version = "0.4.9"
@@ -2080,7 +2154,9 @@ name = "rot"
 version = "0.1.0"
 dependencies = [
  "chrono",
+ "env_logger",
  "hex",
+ "log",
  "rocket",
  "rocket_dyn_templates",
  "sea-orm",
@@ -2107,6 +2183,20 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "rustix"
+version = "0.36.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd5c6ff11fecd55b40746d1995a02f2eb375bf8c00d192d521ee09f42bef37bc"
+dependencies = [
+ "bitflags",
+ "errno",
+ "io-lifetimes",
+ "libc",
+ "linux-raw-sys",
+ "windows-sys 0.45.0",
+]
+
 [[package]]
 name = "rustls"
 version = "0.20.8"
diff --git a/Cargo.toml b/Cargo.toml
index 1207e8c..29ec8bf 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,3 +14,5 @@ rocket_dyn_templates = { version = "0.1.0-rc.2", features= ["tera"] }
 chrono =  { version = "0.4", features = ["serde"]}
 sha3 = "0.10"
 hex = "0.4"
+log = "0.4"
+env_logger = "0.10"
diff --git a/src/main.rs b/src/main.rs
index 801d8ae..ad24233 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -6,5 +6,6 @@ mod rest;
 
 #[launch]
 async fn rocket() -> _ {
+    env_logger::init();
     rest::start().await
 }
diff --git a/src/models/user.rs b/src/models/user.rs
index dc763cb..8df4939 100644
--- a/src/models/user.rs
+++ b/src/models/user.rs
@@ -37,6 +37,7 @@ impl Model {
                     name: Set(name.clone().into()),
                     ..Default::default()
                 };
+                log::info!("User {:?} created", user);
                 user.insert(db).await.unwrap()
             }
         }
diff --git a/src/rest/mod.rs b/src/rest/mod.rs
index 770a77c..147052f 100644
--- a/src/rest/mod.rs
+++ b/src/rest/mod.rs
@@ -103,17 +103,24 @@ async fn savename(
                 let entered_pw = hasher.finalize();
 
                 if hex::encode(entered_pw) == pw {
+                    log::info!("{} hat sich erfolgreich eingeloggt (mit PW)", name.name);
                     cookies.add_private(Cookie::new("name", name.name.clone()));
                     return Flash::success(Redirect::to("/"), "Erfolgreich eingeloggt");
                 } else {
+                    log::warn!("Somebody tried to login as {} with a WRONG pw", name.name);
                     return Flash::error(Redirect::to("/name"), "Falsches Passwort");
                 }
             }
             None => {
+                log::warn!(
+                    "Somebody tried to login as {}, w/o specifying a pw",
+                    name.name
+                );
                 return Flash::error(Redirect::to("/name"), "Benutzer besitzt hat Passwort, du hast jedoch keines eingegeben. Bitte nochmal probieren");
             }
         },
         None => {
+            log::info!("{} hat sich erfolgreich eingeloggt (ohne PW)", name.name);
             cookies.add_private(Cookie::new("name", name.name.clone()));
             return Flash::success(Redirect::to("/"), "Name erfolgreich ausgewählt");
         }
diff --git a/src/rest/restday.rs b/src/rest/restday.rs
index 130fe47..3cc52d1 100644
--- a/src/rest/restday.rs
+++ b/src/rest/restday.rs
@@ -28,10 +28,12 @@ async fn create(db: &State<DatabaseConnection>, day: Form<DayForm>) -> Redirect
         .await
         .unwrap();
     match day {
-        Some(_) => {
+        Some(day) => {
+            log::info!("{:?} got updated to {:?}", day, new_day);
             new_day.update(db.inner()).await.unwrap(); //TODO: fixme
         }
         None => {
+            log::info!("{:?} got inserted", new_day);
             new_day.insert(db.inner()).await.unwrap(); //TODO: fixme
         }
     }
diff --git a/src/rest/restreg.rs b/src/rest/restreg.rs
index b8ed1c8..d186026 100644
--- a/src/rest/restreg.rs
+++ b/src/rest/restreg.rs
@@ -29,6 +29,7 @@ async fn register(
         .expect("There's no trip on this date (yet)");
 
     if !(day.open_registration || user.is_cox) {
+        log::error!("{} tried to register, even though the user it should not be possible to do so via UI -> manually crafted request?", user.name);
         return Redirect::to("/");
     }
 
@@ -41,6 +42,7 @@ async fn register(
         ..Default::default()
     };
 
+    log::info!("{} registered for {:?}", user.name, trip);
     trip.insert(db.inner()).await.unwrap();
 
     Redirect::to("/")
@@ -65,6 +67,7 @@ async fn delete(
         .expect("There's no trip on this date (yet)");
 
     if delete.user != user.id {
+        log::error!("{} tried to delete a registration from user_id {} on day {:?} (probably hand-crafted request)", user.name, delete.user, delete.day);
         return Flash::error(
             Redirect::to("/"),
             "Du kannst nur deine eigenen Anmeldungen löschen!",
@@ -76,8 +79,12 @@ async fn delete(
         .await
         .unwrap();
     match trip {
-        None => return Flash::error(Redirect::to("/"), "Du bist gar nicht angemeldet!"),
+        None => {
+            log::error!("Tried to register w/o being authenticated (prob. hand crafted request (user.name = {})", user.name);
+            return Flash::error(Redirect::to("/"), "Du bist gar nicht angemeldet!");
+        }
         Some(trip) => {
+            log::info!("User {} deleted the registration for {:?}", user.name, trip);
             trip::Entity::delete(trip::ActiveModel {
                 day: Set(trip.day),
                 user_id: Set(trip.user_id),