Social media giant Twitter on Saturday said that cyber attackers targeted some of its employees through a social engineering scheme and used their credentials to access its internal systems for hacking multiple accounts in the Bitcoin scam.

from Times of India https://timesofindia.indiatimes.com/business/india-business/hackers-used-credentials-of-some-employees-to-access-our-internal-systems-twitter-on-bitcoin-scam/articleshow/77030611.cms