We have given travel tips for foreign travellers as well as indian travelling in India.
Keep your money and credit cards safe at all times. Always carry some cash as many places won't take cards.
Do not display 500 and 1000 rupee notes in public.
Beware of pickpockets on buses and trains.
Also beware of mobile, chain, or bag snatchers who operate in densely populated places, such as railway stations, busy roads, and traffic signals.
Women traveling by train, especially on off-peak routes should travel in the second class where at least a few co-passengers are also found.
Women (especially Westerners) should avoid crowded places, you might well get groped. Cases of men pinching or touching women are common in crowded public places, including nicer nightspots. Create a scene if this does happen to you, there will be enough people around that will come to your defence. In general, in Mumbai, if you are ever worried about your safety, make a loud scene. It is an extremely crowded city, and somebody is always around and willing to help.
Women should never ever take lifts from strangers. Western women tourists should note that if they visit a disco or pub in Mumbai or India, don't take lifts or even get too friendly with strangers. You will almost certainly get conned, if not worse. Many Indian men presume that if you're foreign you must be easy.
Don't ever let an auto or taxi you are traveling to pick up any more people as it may be planning to rob you.
Police can sometimes be almost as shady as criminals in Mumbai. At night, women should ensure if they are ever stopped by police, there needs to be a female police officer present or they are well within their rights in demanding the presence of a woman cop.