private IList<Password> GetLastThreePriorPasswords()
{
var lastThreePriorPasswords = new List<Password>();
int count = 0;
foreach (Password priorPassword in PriorPasswords)
{
count++;
if (count > 3) break;
lastThreePriorPasswords.Add(priorPassword);
}
return lastThreePriorPasswords;
}