diff --git a/internal/auth/auth.go b/internal/auth/auth.go
index 8da45da..b10c3bd 100644
--- a/internal/auth/auth.go
+++ b/internal/auth/auth.go
@@ -102,7 +102,7 @@ func Init(configs map[string]interface{}) (*Authentication, error) {
 	}
 
 	auth.JwtAuth = &JWTAuthenticator{}
-	if err := auth.JwtAuth.Init(configs["jwt"]); err != nil {
+	if err := auth.JwtAuth.Init(); err != nil {
 		log.Error("Error while initializing authentication -> jwtAuth init failed")
 		return nil, err
 	}
@@ -115,20 +115,26 @@ func Init(configs map[string]interface{}) (*Authentication, error) {
 			auth.LdapAuth = ldapAuth
 			auth.authenticators = append(auth.authenticators, auth.LdapAuth)
 		}
+	} else {
+		log.Info("Missing LDAP configuration: No LDAP support!")
 	}
 
-	jwtSessionAuth := &JWTSessionAuthenticator{}
-	if err := jwtSessionAuth.Init(configs["jwt"]); err != nil {
-		log.Warn("Error while initializing authentication -> jwtSessionAuth init failed")
-	} else {
-		auth.authenticators = append(auth.authenticators, jwtSessionAuth)
-	}
+	if config, ok := configs["jwt"]; ok {
+		jwtSessionAuth := &JWTSessionAuthenticator{}
+		if err := jwtSessionAuth.Init(config); err != nil {
+			log.Warn("Error while initializing authentication -> jwtSessionAuth init failed")
+		} else {
+			auth.authenticators = append(auth.authenticators, jwtSessionAuth)
+		}
 
-	jwtCookieSessionAuth := &JWTCookieSessionAuthenticator{}
-	if err := jwtCookieSessionAuth.Init(configs["jwt"]); err != nil {
-		log.Warn("Error while initializing authentication -> jwtCookieSessionAuth init failed")
+		jwtCookieSessionAuth := &JWTCookieSessionAuthenticator{}
+		if err := jwtCookieSessionAuth.Init(configs["jwt"]); err != nil {
+			log.Warn("Error while initializing authentication -> jwtCookieSessionAuth init failed")
+		} else {
+			auth.authenticators = append(auth.authenticators, jwtCookieSessionAuth)
+		}
 	} else {
-		auth.authenticators = append(auth.authenticators, jwtCookieSessionAuth)
+		log.Info("Missing JWT configuration: No JWT token login support!")
 	}
 
 	auth.LocalAuth = &LocalAuthenticator{}
diff --git a/internal/auth/jwt.go b/internal/auth/jwt.go
index 9c0166d..4a1e4b8 100644
--- a/internal/auth/jwt.go
+++ b/internal/auth/jwt.go
@@ -22,12 +22,9 @@ import (
 type JWTAuthenticator struct {
 	publicKey  ed25519.PublicKey
 	privateKey ed25519.PrivateKey
-	config     *schema.JWTAuthConfig
 }
 
-func (ja *JWTAuthenticator) Init(conf interface{}) error {
-	ja.config = conf.(*schema.JWTAuthConfig)
-
+func (ja *JWTAuthenticator) Init() error {
 	pubKey, privKey := os.Getenv("JWT_PUBLIC_KEY"), os.Getenv("JWT_PRIVATE_KEY")
 	if pubKey == "" || privKey == "" {
 		log.Warn("environment variables 'JWT_PUBLIC_KEY' or 'JWT_PRIVATE_KEY' not set (token based authentication will not work)")
diff --git a/internal/auth/jwtCookieSession.go b/internal/auth/jwtCookieSession.go
index 42ebcd2..9dcba57 100644
--- a/internal/auth/jwtCookieSession.go
+++ b/internal/auth/jwtCookieSession.go
@@ -8,6 +8,7 @@ import (
 	"crypto/ed25519"
 	"encoding/base64"
 	"errors"
+	"fmt"
 	"net/http"
 	"os"
 
@@ -82,6 +83,7 @@ func (ja *JWTCookieSessionAuthenticator) Init(conf interface{}) error {
 		return errors.New("config for JWTs not configured (cross login via JWT cookie will fail)")
 	}
 
+	log.Info("JWT Cookie Session authenticator successfully registered")
 	return nil
 }
 
@@ -137,7 +139,7 @@ func (ja *JWTCookieSessionAuthenticator) Login(
 		return ja.publicKey, nil
 	})
 	if err != nil {
-		log.Warn("error while parsing token")
+		log.Warn("JWT cookie session: error while parsing token")
 		return nil, err
 	}
 
@@ -151,8 +153,16 @@ func (ja *JWTCookieSessionAuthenticator) Login(
 	sub, _ := claims["sub"].(string)
 
 	var name string
-	if val, ok := claims["name"]; ok {
-		name, _ = val.(string)
+	if wrap, ok := claims["name"].(map[string]interface{}); ok {
+		if vals, ok := wrap["values"].([]interface{}); ok {
+			if len(vals) != 0 {
+				name = fmt.Sprintf("%v", vals[0])
+
+				for i := 1; i < len(vals); i++ {
+					name += fmt.Sprintf(" %v", vals[i])
+				}
+			}
+		}
 	}
 
 	var roles []string
@@ -188,10 +198,12 @@ func (ja *JWTCookieSessionAuthenticator) Login(
 	http.SetCookie(rw, deletedCookie)
 
 	if user == nil {
+		projects := make([]string, 0)
 		user = &schema.User{
 			Username:   sub,
 			Name:       name,
 			Roles:      roles,
+			Projects:   projects,
 			AuthType:   schema.AuthSession,
 			AuthSource: schema.AuthViaToken,
 		}
diff --git a/internal/auth/jwtSession.go b/internal/auth/jwtSession.go
index d9dce85..f68de90 100644
--- a/internal/auth/jwtSession.go
+++ b/internal/auth/jwtSession.go
@@ -6,6 +6,7 @@ package auth
 
 import (
 	"encoding/base64"
+	"errors"
 	"fmt"
 	"net/http"
 	"os"
@@ -37,6 +38,7 @@ func (ja *JWTSessionAuthenticator) Init(conf interface{}) error {
 		ja.loginTokenKey = bytes
 	}
 
+	log.Info("JWT Session authenticator successfully registered")
 	return nil
 }
 
@@ -46,7 +48,8 @@ func (ja *JWTSessionAuthenticator) CanLogin(
 	rw http.ResponseWriter,
 	r *http.Request) (*schema.User, bool) {
 
-	return user, r.Header.Get("Authorization") != "" || r.URL.Query().Get("login-token") != ""
+	return user, r.Header.Get("Authorization") != "" ||
+		r.URL.Query().Get("login-token") != ""
 }
 
 func (ja *JWTSessionAuthenticator) Login(
@@ -79,29 +82,38 @@ func (ja *JWTSessionAuthenticator) Login(
 	sub, _ := claims["sub"].(string)
 
 	var name string
-	// Java/Grails Issued Token
 	if wrap, ok := claims["name"].(map[string]interface{}); ok {
 		if vals, ok := wrap["values"].([]interface{}); ok {
-			name = fmt.Sprintf("%v %v", vals[0], vals[1])
-		}
-	} else if val, ok := claims["name"]; ok {
-		name, _ = val.(string)
-	}
+			if len(vals) != 0 {
+				name = fmt.Sprintf("%v", vals[0])
 
-	var roles []string
-	// Java/Grails Issued Token
-	if rawroles, ok := claims["roles"].([]interface{}); ok {
-		for _, rr := range rawroles {
-			if r, ok := rr.(string); ok {
-				if schema.IsValidRole(r) {
-					roles = append(roles, r)
+				for i := 1; i < len(vals); i++ {
+					name += fmt.Sprintf(" %v", vals[i])
 				}
 			}
 		}
-	} else if rawroles, ok := claims["roles"]; ok {
-		for _, r := range rawroles.([]string) {
-			if schema.IsValidRole(r) {
-				roles = append(roles, r)
+	}
+
+	var roles []string
+
+	if ja.config.ValidateUser {
+		// Deny any logins for unknown usernames
+		if user == nil {
+			log.Warn("Could not find user from JWT in internal database.")
+			return nil, errors.New("unknown user")
+		}
+
+		// Take user roles from database instead of trusting the JWT
+		roles = user.Roles
+	} else {
+		// Extract roles from JWT (if present)
+		if rawroles, ok := claims["roles"].([]interface{}); ok {
+			for _, rr := range rawroles {
+				if r, ok := rr.(string); ok {
+					if schema.IsValidRole(r) {
+						roles = append(roles, r)
+					}
+				}
 			}
 		}
 	}
diff --git a/internal/auth/ldap.go b/internal/auth/ldap.go
index a20e415..529179e 100644
--- a/internal/auth/ldap.go
+++ b/internal/auth/ldap.go
@@ -57,7 +57,7 @@ func (la *LdapAuthenticator) Init(conf interface{}) error {
 			}
 		}()
 	} else {
-		return fmt.Errorf("missing LDAP configuration")
+		log.Info("Missing LDAP configuration key sync_interval")
 	}
 
 	return nil
@@ -69,10 +69,12 @@ func (la *LdapAuthenticator) CanLogin(
 	rw http.ResponseWriter,
 	r *http.Request) (*schema.User, bool) {
 
-	if user != nil && user.AuthSource == schema.AuthViaLDAP {
-		return user, true
+	if user != nil {
+		if user.AuthSource == schema.AuthViaLDAP {
+			return user, true
+		}
 	} else {
-		if la.config != nil && la.config.SyncUserOnLogin {
+		if la.config.SyncUserOnLogin {
 			l, err := la.getLdapConnection(true)
 			if err != nil {
 				log.Error("LDAP connection error")
@@ -89,12 +91,12 @@ func (la *LdapAuthenticator) CanLogin(
 			sr, err := l.Search(searchRequest)
 			if err != nil {
 				log.Warn(err)
-				return user, false
+				return nil, false
 			}
 
 			if len(sr.Entries) != 1 {
-				log.Warn("User does not exist or too many entries returned")
-				return user, false
+				log.Warn("LDAP: User does not exist or too many entries returned")
+				return nil, false
 			}
 
 			entry := sr.Entries[0]
@@ -117,12 +119,6 @@ func (la *LdapAuthenticator) CanLogin(
 				return nil, false
 			}
 
-			// if _, err := la.auth.db.Exec(`INSERT INTO user (username, ldap, name, roles) VALUES (?, ?, ?, ?)`,
-			// 	username, 1, name, "[\""+schema.GetRoleString(schema.RoleUser)+"\"]"); err != nil {
-			// 	log.Errorf("User '%s' new in LDAP: Insert into DB failed", username)
-			// 	return false
-			// }
-
 			return user, true
 		}
 	}
@@ -144,7 +140,8 @@ func (la *LdapAuthenticator) Login(
 
 	userDn := strings.Replace(la.config.UserBind, "{username}", user.Username, -1)
 	if err := l.Bind(userDn, r.FormValue("password")); err != nil {
-		log.Errorf("AUTH/LOCAL > Authentication for user %s failed: %v", user.Username, err)
+		log.Errorf("AUTH/LOCAL > Authentication for user %s failed: %v",
+			user.Username, err)
 		return nil, fmt.Errorf("AUTH/LDAP > Authentication failed")
 	}