If you are a altcoin investor, do not keep all your eggs in one basket, if you believe in an altcoin, make sure it's not the only one, in fact, the more coins you have in your portfolio the lesser the risk, because not all the coins will go bad or get hacked, if one out of 5 or 10 become successful, 6x to , 10x or more, you've made back your ROI and still have some gains.
A wise investor will never choose a project that doesn't give profit assurance like investing in new projects. How much more to put all of the funds into a single investment? Hackers are really aggressive this time, we can't just simply ignore their presence, and spreading our investment 2-3 different projects could likely save us from them, from taking our funds. But this is not the only thing we have to check, we also consider the potentiality of the project otherwise, it is impossible to have ROI, it was just the same as getting hacked.