sitting duck
US /ˈsɪtɪŋ dʌk/
UK /ˈsɪtɪŋ dʌk/

1.
sasaran mudah, mangsa mudah
a person or thing that is easy to attack or criticize
:
•
Without proper security, the server was a sitting duck for hackers.
Tanpa keselamatan yang betul, pelayan itu adalah sasaran mudah untuk penggodam.
•
The politician became a sitting duck after his scandal was exposed.
Ahli politik itu menjadi sasaran mudah selepas skandalnya terbongkar.