Difficulty -
Medium
Total Plays - 12
Allowed Time - 10 sec
Best time - 1.493 sec
Why are fallback functions dangerous?
#A
#B
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#D
Explanation:
Fallback functions run automatically when unknown calls or plain ETH are sent. If they contain external calls or heavy logic, attackers can trigger recursion or re-entrancy. They must be kept minimal and safe.
