This is a practical warning for savers and retirees: several common ways people store money quietly cost them cash or put it at risk.

• Fintech apps (not actual banks) can fail and freeze your money for months — always confirm which real bank holds your deposits and that it's FDIC insured.
• Keeping large cash stashes at home earns nothing, loses value to inflation, and is barely covered by home insurance if stolen.
• Adding an adult child to your bank account can expose your savings to their debts or lawsuits, and may override your will when you die.
• Forgotten bank accounts and old CDs can get swept into state unclaimed-money programs, and CDs often auto-renew at much lower rates than you started with.
• Leaving big balances in low-interest savings accounts or brokerage cash sweeps can quietly cost people thousands a year compared to higher-paying alternatives.

Outlook: As interest rates keep shifting, savers who actively compare savings accounts, CDs, and Treasury options — and watch how interest income affects Social Security and Medicare costs — will come out ahead of those who leave money sitting on autopilot.