Monitoring

Swaprum

MEDIUMArbitrum·Backdoor Contract·#399 all-time
$3.0M stolenFriday, May 19, 2023 · 1255 days ago

Corpus updated 2026-10-25

What happened

  • Swaprum, a defi protocol, lost $3.0M on May 19, 2023.

  • The 45th largest of the 197 incidents recorded in 2023: under 1% of the $1.63B lost to hacks that year.

  • One other incident was recorded the same day: WDZD Swap ($1.0M).

  • Backdoor Contract is behind 8 recorded incidents totalling $38.1M; this is the 3rd largest of them.

Cite this record

Monitoring Room, "Swaprum hack — $3.0M stolen", incident record, data: DefiLlama hacks dataset, as of 2026-10-25 08:00 UTC. https://monitoringroom.com/situation/crypto-hack/swaprum

Nearby in the record

WDZD Swap
5/19/2023$1.0M
Tornado Cash
5/20/2023$2.2M
LW Token
5/12/2023$50K
Swap-LP
5/20/2023$1.1M
SNK (Snooker)
5/10/2023$198K
LunaFi
5/23/2023$35K
← All incidents

Source: DefiLlama · 1317 recorded incidents · data as of 2026-10-25 08:00 UTC