Hack history / 2018 / Hack or exploit
BitGrail
Hack or exploit on Feb 12, 2018 · Improper Access Control
SOURCES AGREE ON DATE AND LOSS · 2 SOURCES
Lost
$170M
dollars at the time
Returned
none listed
as the sources state it
Rank
#36
among thefts by dollars lost
What happened
On February 9-12, 2018, BitGrail exchange suffered a massive breach affecting 17M Nano coins (~$170M). The exploit involved a flaw in the withdrawal mechanism that allowed repeated withdrawals of the same funds. Attackers gradually stole 2.5M Nano from hot wallets, with abuse continuing over months for a total of 7.5M+ Nano.
Details
- Date
- Feb 12, 2018
- Kind
- Hack or exploit
- Method
- Improper Access Control
- How in
- Smart contract bug
- Target
- Centralized exchange
- Chains
- Nano
Reported by
Related incidents
Cite this page
SwanBluechip, "BitGrail hack, Feb 12, 2018: $170M lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht7ab821f17a/ (data as of 2026-10-31).