Posts tagged broken

NoSQL Meets Bitcoin and Brings Down Two Exchanges: The Story of Flexcoin and Poloniex

nosql bitcoin mongo broken April 06, 2014 at 12:15 PM Emin Gün Sirer
The real story of how weak NoSQL systems allowed users to make money out of the thin air and brought down two Bitcoin exchanges, one permanently.

Five Red Flags that Preceded Neo & Bee's Collapse

bitcoin neo&bee broken April 05, 2014 at 05:00 PM Emin Gün Sirer
A quick summary of the red flags that preceded the demise of Neo & Bee, the latest Bitcoin startup from Cyprus.

Response to Fairweather Mining

bitcoin security broken selfish-mining November 08, 2013 at 11:21 AM Ittay Eyal and Emin Gün Sirer
Fairweather mining has been suggested to argue that selfish mining would be a short-lived strategy, but fairweather mining analysis is flawed because it does not take proofs of work into account.

Bitcoin Is Broken

bitcoin security broken selfish-mining November 04, 2013 at 10:30 AM Ittay Eyal and Emin Gün Sirer
We discovered an attack against the Bitcoin mining protocol that can have a significant impact on the Bitcoin community.

When PR says No but Engineering says Yes

mongo broken February 07, 2013 at 02:37 PM Emin Gün Sirer
MongoDB is really broken when it comes to fault-tolerance.

Broken by Design: MongoDB Fault Tolerance

mongo nosql fault-tolerance bolt-on engineering broken January 29, 2013 at 02:15 PM Emin Gün Sirer
MongoDB claims that it provides fault-tolerance. In this note, I explain why and how it falls short.