diff --git a/conf/systemd.service b/conf/systemd.service
index 94ad361..f788c59 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -12,5 +12,39 @@ Environment=PATH=__ENV_PATH__
 Environment=NODE_ENV=production
 ExecStart=__YNH_NPM__ run start
 
+# Sandboxing options to harden security
+# Depending on specificities of your service/app, you may need to tweak these
+# .. but this should be a good baseline
+# Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
+NoNewPrivileges=yes
+PrivateTmp=yes
+PrivateDevices=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
+RestrictNamespaces=yes
+RestrictRealtime=yes
+DevicePolicy=closed
+ProtectClock=yes
+ProtectHostname=yes
+ProtectProc=invisible
+ProtectSystem=full
+ProtectControlGroups=yes
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+LockPersonality=yes
+SystemCallArchitectures=native
+SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap @cpu-emulation @privileged
+
+# Denying access to capabilities that should not be relevant for webapps
+# Doc: https://man7.org/linux/man-pages/man7/capabilities.7.html
+CapabilityBoundingSet=~CAP_RAWIO CAP_MKNOD
+CapabilityBoundingSet=~CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_AUDIT_WRITE
+CapabilityBoundingSet=~CAP_SYS_BOOT CAP_SYS_TIME CAP_SYS_MODULE CAP_SYS_PACCT
+CapabilityBoundingSet=~CAP_LEASE CAP_LINUX_IMMUTABLE CAP_IPC_LOCK
+CapabilityBoundingSet=~CAP_BLOCK_SUSPEND CAP_WAKE_ALARM
+CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG
+CapabilityBoundingSet=~CAP_MAC_ADMIN CAP_MAC_OVERRIDE
+CapabilityBoundingSet=~CAP_NET_ADMIN CAP_NET_BROADCAST CAP_NET_RAW
+CapabilityBoundingSet=~CAP_SYS_ADMIN CAP_SYS_PTRACE CAP_SYSLOG
+
 [Install]
 WantedBy=multi-user.target
diff --git a/doc/DESCRIPTION_fr.md b/doc/DESCRIPTION_fr.md
new file mode 100644
index 0000000..3422fc6
--- /dev/null
+++ b/doc/DESCRIPTION_fr.md
@@ -0,0 +1 @@
+Hat.sh est une application Web qui fournit un chiffrement local sécurisé des fichiers dans le navigateur. Il est rapide, sécurisé et utilise des algorithmes cryptographiques modernes avec un chiffrement/déchiffrement de flux AEAD fragmenté.
\ No newline at end of file
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 2540c42..f053b64 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 
 # nodejs version
-nodejs_version=18
+nodejs_version=20
 
 #=================================================
 # PERSONAL HELPERS