If we are browsing about the scam using Elon Musk's name, there will be many sources that report the scam and fake giveaway.
Moreover, this kind of scam was since around October 2018, with the almost same ways.
https://www.coindesk.com/twitter-let-a-fake-elon-musk-account-promote-a-crypto-scamAnd now it is there again.
One of them can be found here:
https://news.bitcoin.com/elon-musk-bitcoin-giveaway-scam-millions-dollars-btc/Be careful about this kind of similar scam. What you need to watch out when participating in a giveaway is:
1. Never only believe in one source, you must do your own research to the official sites, social media, and also compare to the other legitimate sources.
2. Never easily tempted by big giveaway rewards, so that you aside the logic to analyze it and just follow the other friends.
3. be careful if you must send ETH/BTC first to unlock the rewards, it may be suspicious and need to watch out, better to check, and recheck again.
4. Never only tempted by the big name, you must know which one is legit and scam.
5. Last, never be greedy because greedy may lead you to play or do without logic analysis and consideration.
Good advice on avoiding being a victim of giveaways scams. It seem this particular group launched a coordinated attack. I got a message of the above scam also in my email referring me the same scam, this time, they used a twitter account screenshot. I knew better not to take them seriously