Shopping online is convenient, but having your time or money stolen is not. With so many people looking for last-minute back-to-school deals, the Federal Trade Commission is warning you to do what you can to protect yourself and your purchases.

Here are five key things you can do:

  1. Look for pre-checked boxes. It’s illegal, but some companies use them hoping you won’t notice you’re agreeing to be charged later. Uncheck the box if you disagree with what it says. If you want to change or cancel a subscription or automatic charge, sellers must give you an easy way to cancel.
  2. Once you’ve completed your purchase, save your receipts or confirmation emails. If there is a problem, it will help you get your money back from the seller or file a dispute with your credit card company.
  3. Know your rights regarding late deliveries. If you bought something online and never received it, let the seller know as soon as possible. If the seller hasn’t shipped the item within the time promised when you bought it, the law says you can cancel the order for a full refund.