Just-Dice Hack
What happened
The owner of the bitcoin betting site Just-Dice, a rival to SatoshiDice, had a severe moment of panic when a user taking advantage of a human error caused him to lose 1,300 bitcoins (around $116,090 at the time of writing).
Known only as ‘dooglus’, the owner revealed on the Bitcoin Talk forum that he had made something of a colossal mistake.
was this: a player won a load of bitcoins on the site and asked to withdraw them, dooglus paid out, but forgot to remove the balance from the user’s Just-Dice account. The user then gambled — and lost — the bitcoins that were left in his account and dooglus covered the loss out of his own pocket.
When he realized his mistake, dooglus contacted the user, who claimed he had left his laptop in a café and that someone else logged onto his Just-Dice account and gambled the money.
Case & protocol details
Evidence & learning
Attack pattern
Compare incidents →Sources and on-chain records
- report Post-mortem medium.com
- report Report coindesk.com
Build your security review skills
Work through hands-on labs covering real exploit mechanics, review techniques, and defensive patterns.