The coin that is so pathetically insecure that such can happen is not secure, and if you thought it was you were an idiot.
Bitcoin has more SHA256 hashing power than the whole rest of the world all put together, that is why bitcoin hopes maybe to be secure.
All these garbage crapcoins which have so little hashing power that just a stupid meme can drum up as much or more hashing power almost overnight were never secure, and by letting people imagine they were they were scamming.
It is insanely expensive to secure a proof of work blockchain.
Even bitcoin might not have spent enough / be spending enough, spending any less is just stupid, a total scam, just a deliberate criminal irresponsibility scam to scam money out of people because the scammers know most people do not understand the need for massive massive massive hashpower thus do not realise that even bitcoin might not manage to secure itself if the SHA256 hash power of the world fragments and that scrypt is already so fragmented even the highest hash power scrypt coins are pathetically vulnerable still.
-MarkM-