Of course there is a possibility that it will get stolen. Just as there is a possibility that it will get stolen if you take it to a cafe or on a train in your home town, or if you are travelling around Europe, or Africa, or America, or anywhere. There's always a risk that your passport, money, valuables etc. will be stolen when you're travelling. The risk rises because you're on the road much more, so you have more time during your day when you and your valuables are in a strange place, and not just secure in your own home, and also because you're spending your time looking around you at what you're there to visit, so you might get distracted and give someone a chance to take it. This isn't particular to India, though. Use common sense and standard travel advice and take care. I was on a night train in India once, and when we arrived two other tourists had had their backpacks stolen from underneath their beds while they slept. Take a chain/cable and a padlock. At least one. Padlock your bag to your bed when you're on overnight trains. Sleep with your valuables in a fanny pack under your skin, and things like your laptop in bed with you. Be careful how you store your things in shared rooms in hostels - lock everything to your bed there, too, if you can. Keep a hand on your bag when you're out and about, and be generally alert. These, though, are things you should do everywhere when you're travelling, not just in India.