title: Address insecure random number generation in PHP
body: <p>we are running Fortify scans on various Drupal modules, and a common critical/high result is "Insecure Randomness". It states that the rand() function cannot withstand a cryptographic attack.</p>
  
  <p>My question - is this a serious concern? How to fix it in PHP?</p>
  
  <p>Thank you.</p>