I had some doubts about veracity and while still in two minds but https://www.vn.nl/trump-twitter-hacked-again/ provides enough details that if it does turn out to be bs then they are easy enough to prove or refute - " After logging in, he emailed US-CERT". But I agree with your sense of hesitancy since the sources of the story mostly originate from Yahoo News, a Dutch marketing company called DPG Media, TechCrunch rather than the usual broader sources.

It will be interesting to see how Victor Gevers responds.