Although the place is quite safe, it is advisable to take precautions. Stay vigilant at all times and be very cautious if staying out after 9PM. Mainly during weekends try to come back to your place early. Do not accept rides from strangers. Be careful when alone at night. Some places like Triund trailhead get deserted pretty quickly after sunset. Do not give any eatables to monkeys because they can attack you. Avoid paying beggars as you only motivate them to beg by doing so, but if you give a kilo of rice which you can buy in any of the small shops you will be helping to support some of the poorest people in the world. Local people are very helpful, in case of any problem talk immediately and ask them for help. Beware of your thoughts and high expectations, instead be neutral and open minded.