If you are the victim of compromised or hacked account then you must safeguard your account by doing following things:
üReset the account password using the security question
üVerify your credentials and update them
üScan the system for malware and viruses
üUpdate your browser and OS and other device drivers
üInteract with customer care via Yahoo customer care number 1-844-794-2515 reachable during the day as well as night.
Visit Here-