ChainBleedv0.1 · open intel
← back to feed·INFRASTRUCTURE2020-11-08 · 5y ago
Incident · SLOWMIST

Grin

51% attack
Estimated loss
VERDICT —OUT OF SCOPE
Root cause is infrastructure (DNS / cloud / database / third-party API) compromise, not on-chain contract logic. Pre-deployment source review would not surface this; coverage lives in cloud-security + supply-chain audit, separate discipline.
▰ METHOD
INFRASTRUCTURE
INFRASTRUCTURE
Root cause

Root-cause analysis not yet published. The incident description below contains all currently available signal — review the attack transaction directly for definitive forensics.

Forensic narrative

According to reports, the Grin network has recently suffered 51% attacks. An unknown entity controlled more than 57% of network computing power on Saturday. According to the Grin website, the team advises people to wait for "additional confirmation on payment finality." According to a reminder announcement issued on the Grin website on November 9, "Important notice: Grin's network computing power has increased significantly in a short period of time. It is worth noting that this coincides with the time when the Nicehash rate doubled. Currently, more than 50% of the network computing The power is outside the known pool. Considering these circumstances, it is wise to wait for additional confirmation of the transaction to ensure the finality of the payment.” According to previous reports, on November 8, 2Miners tweeted that Grin Network is receiving 51 % Attacked, payment has stopped. Please do so at your own risk, as new blocks may be rejected. Attack method (per SlowMist): 51% attack. Reported loss: -.

Primary source
https://www.coindesk.com/markets/2020/11/08/privacy-coin-grin-is-victim-of-51-attack/
Sourced from
slowmist
Technical record
chain
protocol
Grin
bug_class
infrastructure
date_occurred
2020-11-08
loss_usd
source_id
sm:grin::2020-11-08
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