Google has alerted YouTube creators to ongoing phishing attacks by hackers who imitate advertising agencies to hijack their accounts. Phishing emails contain malware that sends users' passwords to the hackers' systems. Google recommended that YouTube creators use two-factor authentication to protect their accounts.
https://www.notebookcheck.net/Hackers-attempt-to-hijack-the-accounts-of-YouTube-creators-via-phishing-attacks.574870.0.html