Hack history / 2019 / Hack or exploit
EOS 欢乐谷(Happy Pool)
Hack or exploit on Mar 4, 2019 · Transaction congestion attack
ONE SOURCE · 1 SOURCE
Lost
$1K
dollars at the time
Returned
none listed
as the sources state it
Rank
#2,418
among thefts by dollars lost
What happened
Hackers launched continuous attacks on the EOS quiz game EOS Happy Valley, and they have profited hundreds of EOS. The game party has transferred the account balance away. Attackers still use transaction crowding out attacks. To completely fix this vulnerability, DApp developers should remove controllable variables such as account balance or time factors to participate in random number generation.
Details
- Date
- Mar 4, 2019
- Kind
- Hack or exploit
- Method
- Transaction congestion attack
- How in
- Smart contract bug
- Target
- not stated
- Chains
- EOS
Reported by
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Cite this page
SwanBluechip, "EOS 欢乐谷(Happy Pool) hack, Mar 4, 2019: $1K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht714a5e79ab/ (data as of 2026-10-31).