Like Bitcoin people open their wallet to Twatter? I do not understand this.
It's a common thing you see on Twitter. I'll explain, oversimplified:
Take a prominent figure like Elon Musk. His twitter handle is "@elonmusk". A scammer will create a similar account, say "@e1onmusk" in an attempt to mimic the real person. They will then use that account to dupe unsuspecting people into sending them money with the promise of a return on their investment. "You send $1 in Bitcoin to this address, I'll send you $2 back" kind of thing. People fall for it, but not many, because anyone who takes more than 3 seconds to read the username will see it's a fake.
However, what this hacker has done is taken control of the REAL accounts belonging to folks like Elon Musk and people are falling for it because they do appear legitimate.