The unfortunate thing is that people have a horrible habit of being atrocious humans to each other. This includes stealing packages that are left on doorsteps which is a common practice at this time of the year. While some companies make you sign for boxes that won't fit in your mailbox, others will just leave them outside without even ringing your bell or knocking on your door. It doesn't matter how safe your neighborhood normally is, either. Criminals know that this time of the year is ripe for easy takings and will travel farther to check doorsteps and porches to grab those unattended boxes.
If possible, we always suggest that you ask a neighbor who is home during the day to keep an eye on anything that may be delivered. They may even want to bring the package into their home until you arrive and can retrieve it. I know that my upstairs neighbor and I have an agreement that we bring any packages left on the stoop inside the front door to prevent theft. These simple things can help prevent you losing any presents that you meant to give.
It is always difficult to make sure that your packages are safe during this time of the year, but keeping an eye on the tracking of your package can help cut down on the possibility of theft. Talk to your neighbors and see if you can help each other out as well. After all, that's what this time of the year is supposed to be all about.