Hack history / 2019 / Hack or exploit
BetHash
Hack or exploit on Nov 7, 2019 · Malicious Code Injection Attack
ONE SOURCE · 1 SOURCE
Lost
undisclosed
dollars at the time
Returned
none listed
as the sources state it
Rank
not ranked
collapses, frauds and later news are not ranked
What happened
BetHash's betting game mechanism allows players to guess the ratio of the number between 0-100 and the random number given by the system to win the bonus of the corresponding odds. The smaller the bet number, the greater the odds. Every time a player makes a bet, the dicereceipt() function of the BetHash smart contract will be called to notify the player's account. At this point, the hacker can control the malicious program to hijack the notification and embed the inline operation to implement the attack. Although the attacker also needs to pay a certain amount of bet for every attack, as long as it keeps 0.1 EOS and is conservative
Details
- Date
- Nov 7, 2019
- Kind
- Hack or exploit
- Method
- Malicious Code Injection Attack
- How in
- Smart contract bug
- Target
- not stated
- Chains
- EOS
Reported by
Related incidents
Cite this page
SwanBluechip, "BetHash hack, Nov 7, 2019: undisclosed lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht90b9812794/ (data as of 2026-10-31).