Orbit Chain Bridge
Last changed 2026-10-10 · Score recalculated — Rescored under Scoring v2, the published formula (avoid.net/scoring): 8 → 57. Problems weighed by who is responsible: incidents the subject suffered −16, problems around the subject, caused by others −1.6; legitimacy credit long-running +10. Version history →
Why this score
| Every page starts at | 65 |
| Incidents it suffered (e.g. hacks) | -16 |
| Problems around it, caused by others | -1.6 |
| Long-running | +10 |
| Sum | 57 |
Score: 57/100 (kept between 0 and 100)
How scoring works →Summary
Orbit Bridge is the cross-chain bridging protocol of Orbit Chain, developed by South Korean blockchain company Ozys. On December 31, 2023, attackers compromised seven of ten multisig private keys and drained approximately $81.5 million in ETH, WBTC, USDT, USDC, and DAI from the Ethereum vault in the largest crypto hack of New Year's Eve 2023. The attack has been attributed with medium-to-high confidence to North Korea's Lazarus Group, with an additional alleged insider-threat dimension involving Ozys' former chief information security officer, who allegedly sabotaged the company firewall weeks before the exploit.
Connected Entities
9 entities · 60 linked investigations- Ethereum→mentioned with→Bitcoin(60%)
- Belt Finance→mentioned with→Ethereum(65%)
- Alameda Research→mentioned with→Alameda(70%)
- Orbit Bridge→mentioned with→Ethereum(80%)
- Alameda→mentioned with→Alameda Research(80%)
- Belt Finance→mentioned with→Orbit Bridge(80%)
- Harmony Horizon Bridge→mentioned with→North Korea Lazarus Group — H1 2026 Systematic Crypto Theft Campaign(80%)
- Orbit Bridge→mentioned with→North Korea Lazarus Group — H1 2026 Systematic Crypto Theft Campaign(80%)
- Orbit Chain Bridge→mentioned with→Alameda Research(80%)
- North Korea Lazarus Group — H1 2026 Systematic Crypto Theft Campaign→mentioned with→Harmony Horizon Bridge(80%)
- + 10 more
Timeline(11 events)
2018
Orbit Chain launched by Ozys as a cross-chain bridging protocol supporting multiple public blockchains.
20 November 2023
Ozys' former Chief Information Security Officer submits a voluntary resignation request.
22 November 2023
The former CISO allegedly makes unauthorized changes to Ozys' internal firewall policies without notifying the company, according to Ozys' later allegations.
6 December 2023
The former CISO departs Ozys without disclosing firewall changes or providing handover documentation.
31 December 2023
At approximately 20:52 UTC, an attacker pre-funds an intermediary wallet with 10 ETH sourced from Tornado Cash and begins executing the Orbit Bridge exploit.
2024
Six transactions drain approximately $81.5 million (ETH, WBTC, USDT, USDC, DAI) from the Orbit Bridge Ethereum vault between 05:52–06:25 KST. Development team notified at 07:05 KST; vault shut down at 07:21 KST.
2024
Seoul Metropolitan Police notified at 10:00 KST. KISA notified at 10:35 KST. Security firm Theori engaged for joint investigation.
10 January 2024
Investigators discover that the former CISO had arbitrarily changed firewall policies on November 22, 2023. Ozys notifies South Korea's National Intelligence Service; NIS opens formal investigation.
11 January 2024
Orbit Chain announces an $8 million USD public bounty for intelligence leading to attacker identification or fund recovery.
25 January 2024
Ozys publicly alleges that its former CISO sabotaged the firewall and files civil lawsuit and criminal complaint against the former employee.
8 June 2024
After approximately five months of dormancy, the exploiter moves 12,932 ETH (approximately $47.7 million) through Tornado Cash across seven transactions.
Decision Log
- slot 455369344 · hash GUtdf59kVwowaH9vPGrbT2MmjPYaJBPmXfNGocu6X5nZ
- slot 423211600 · hash FdTqLXtouqegg68FnVfHfZeTAGLcSyy2kSJX3PQhiSxG
This investigation is cryptographically anchored to the Solana blockchain (2 decisions). 14 of 21 cited source URLs have an Internet Archive snapshot.
model: claude-sonnet-4-6
generated: 5/30/2026, 6:33:12 PM
last updated: 10/10/2026, 6:49:17 PM
5 viewsavoid.net — verified advice for a post-truth world