web3radar · monthly intelligence digest
Arbitrum
January 2026
Ethereum · Monitoring since 2021-08-31 · Ranked #4 of 6 monitored chains by activity this month
Executive summary
For Arbitrum in January 2026, 2 security incidents were published, with $1.74M in reported losses.
Security incidents
2
+2 MoM
Total loss reported
$1.74M
+$1.74M MoM
Staking events
0
Slashing-class
0
Notable security incidents
2 published this month
- Fusion by IPOR2026-01-06Fusion by IPOR · OTHER · $336.00K loss · Root cause: smart_contract_bug
- TMX TRIBE2026-01-05TMX TRIBE · OTHER · $1.40M loss · Root cause: smart_contract_bug
Validator-set health
0 staking events · 0 slashing-class
No staking events recorded on Arbitrum during January 2026. Validator set was clean.
Peer benchmark
Among 6 chains web3radar monitored in January 2026
Arbitrum ranked #4 of 6 monitored chains by combined incident + staking event volume this month. Below the median for activity volume this month.