Christmas comes early for thieves who steal packages off doorsteps. In fact, it's already started.

This is the busiest week for parcel-delivery services, and Consumer Reports warns today that package snatchers are on the prowl.

The magazine, which is published by Consumers Union, says there's little recourse for consumers whose parcels were stolen after delivery.

Delivery services usually try to leave packages in inconspicuous spots, or at least ones that aren't clearly visible from the street. But delivery workers are rushed, and many of them are holiday-season temps, so don't expect them to spend too much time hiding your package on the front porch.

If you want to thwart the parcel thieves, consider these tips from Consumer Reports:

• Choose a shipping option that requires you to sign for delivery.
• Check on the package's delivery status online so you can try to be home when it arrives.
• Leave a note asking the delivery service to leave the package with a neighbor.
• Have the package shipped to another location where someone can receive it, like your office or a friend's home.
• Ask the delivery service to hold your package for customer pick-up.
• File a theft report immediately if you think your package was stolen, and contact your credit card company to find out if it offers a purchase-protection service that might reimburse you for stolen purchases.