diff --git a/src/Commands/NewGame.php b/src/Commands/NewGame.php
index 9bfef3d..c05be86 100644
--- a/src/Commands/NewGame.php
+++ b/src/Commands/NewGame.php
@@ -212,7 +212,8 @@ private function installDependencies(string $targetDirectory): void
   {
     // Install dependencies
     $this->output->writeln('<comment>Installing dependencies...</comment>', OutputInterface::VERBOSITY_VERBOSE);
-    if (false === `composer install --working-dir=$targetDirectory --ansi`) {
+    $installCommand = "composer install --working-dir=" . escapeshellarg($targetDirectory) . " --ansi";
+    if (false === shell_exec($installCommand)) {
       throw new RuntimeException('Unable to install dependencies');
     }
   }
diff --git a/src/Commands/ViewLog.php b/src/Commands/ViewLog.php
index f4afafe..6b21c07 100644
--- a/src/Commands/ViewLog.php
+++ b/src/Commands/ViewLog.php
@@ -55,10 +55,15 @@ public function execute(InputInterface $input, OutputInterface $output): int
       return Command::FAILURE;
     }
 
-    if (shell_exec('which multitail')) {
-      `multitail $logFilename`;
-    } else {
-      `tail $logFilename`;
+    $logCommand = "tail ";
+
+    if (shell_exec("which multitail")) {
+      $logCommand = "multitail ";
+    }
+
+    if (false === shell_exec($logCommand . escapeshellarg($logFilename))) {
+      $output->writeln("<error>Failed to open log file $logFilename.</error>");
+      return Command::FAILURE;
     }
 
     return Command::SUCCESS;