Musk replied to him: "That is why you should only use trusted sources".
He also indicated that Tesla "might get into mining" last year.
Scammers have time and again abused Musk's popularity to fleece Twitter users after hacking several popular accounts.
The hackers used his name and likeness to ask for Bitcoin -- a cryptocurrency -- by promoting a fake ad on Twitter in 2018.
Despite Twitter attempting to ban scammers and impersonators on its platform, one impersonator broke into Musk's official account with a fake lookalike verified account, promising his 22.5 million followers free Bitcoin and ethereum cryptocurrencies.
Musk later slammed Twitter and Google for the rise in trolling networks and scams via fake bots on both the platforms.
"The crypto scam level on Twitter is reaching new levels. This is not cool," Musk said.