diff --git a/akka-bbb-apps/src/main/scala/org/bigbluebutton/core/util/RandomStringGenerator.scala b/akka-bbb-apps/src/main/scala/org/bigbluebutton/core/util/RandomStringGenerator.scala
index 0d6c16d315..12a52148e6 100755
--- a/akka-bbb-apps/src/main/scala/org/bigbluebutton/core/util/RandomStringGenerator.scala
+++ b/akka-bbb-apps/src/main/scala/org/bigbluebutton/core/util/RandomStringGenerator.scala
@@ -1,17 +1,19 @@
 package org.bigbluebutton.core.util
 
+import java.security.SecureRandom
+
 object RandomStringGenerator {
   // From: http://www.bindschaedler.com/2012/04/07/elegant-random-string-generation-in-scala/
 
   // Random generator
-  val random = new scala.util.Random
+  val random = new SecureRandom()
 
   // Generate a random string of length n from the given alphabet
   def randomString(alphabet: String)(n: Int): String =
-    Stream.continually(random.nextInt(alphabet.size)).map(alphabet).take(n).mkString
+    LazyList.continually(random.nextInt(alphabet.length)).map(alphabet).take(n).mkString
 
   // Generate a random alphabnumeric string of length n
-  def randomAlphanumericString(n: Int) =
+  def randomAlphanumericString(n: Int): String =
     randomString("abcdefghijklmnopqrstuvwxyz0123456789")(n)
 
 }