Our twitter friend, Deia wrote an article on WiseBread, listing "10 Helpful Ways to Keep Your Laptop Safe While Traveling".
"Leaving your laptop at home is supposedly going to help you relax, but what if you're more anxious without your laptop? You may not be working during the trip, but there could be possible emergencies to handle. And let's not forget that a laptop can function as a travel agent, a guidebook, and an entertainment center, too." -Deia
Number 3 mentions using a laptop security cable. I've purchased and have used this brand from Amazon for several years. It's inexpensive, easy to use and built to last.
I'm a strong advocate of Deia's #6 idea to use a VPN. I've used a VPN since 2009 for daily home/office use and especially while traveling (more VPN articles).