Came here to say just that. I did general customer support for a telco for a few months a while back, and most of the general public can&#x27;t really deal with high security for personal information. If you were as strict with security as you should be, you&#x27;d be locking half of your subscribers out of their accounts eventually. This would create a phenomenal amount of follow-up paperwork for your company, meaning higher costs on your end and greater resentment on the customer&#x27;s end - costs go up for you and customers head elsewhere.<p>It&#x27;s why banks still use laughably short and simple PIN codes.