Nah, even one month doesn't guarantee those guys won't decide to run away with the money one day, nowadays scam projects look so real, they would even conduct an IDO on a reputable IDO platform and still run away with the money(ZenChain), we need to be very careful when invest in these new projects, scammers are getting much wise everyday we just have to be very vigilant, do a good research before investing or instead we can just buy a much older coin which has proved to be good for long term hold, new coins will only get you rekt real fast.