Yes, it is true that one should remain cautious while dealing with massive amounts of Bitcoins. You can try to be safe several times by having multiple Bitcoin wallets. Everything in the world of cryptocurrencies is working on encryption techniques and nothing else. If you are investing in cryptos, you are basically investing in encryption. However, to be somewhat safe, invest less in Bitcoins. You can alter the password from time to time on the condition that you fear the exchange would make a situation worse. Till now, Bitcoin is not that much a risk. However, an event could possibly occur when they turn out to be a scam.

Sources>>   https://www.cryptoknowmics.com/news/how-to-buy-altcoins-in-india/