How can I update my galaxys5 from yahoo & Dec. 2016 warning about hackers?

[AC Question]

when I try to sign into yahoo, I get a screen that says "updated Dec. 16 & account issue"

 

[B. Diddy]

Welcome to Android Central! Which phone, and how are you trying to sign into Yahoo? Are you trying to do so on the web, or are you talking about your Yahoo email on the stock Email app?

Look at this help page, under "Give temporary access while updating": https://help.yahoo.com/kb/SLN27791.html