Hack history / 2023 / Hack or exploit
zkSync
Hack or exploit on Apr 2, 2023 · Downtime
ONE SOURCE · 1 SOURCE
Lost
undisclosed
dollars at the time
Returned
none listed
as the sources state it
Rank
not ranked
collapses, frauds and later news are not ranked
What happened
According to official news, the zkSync team announced the cause of the downtime on Twitter. Block generation stopped due to a block queue database failure. Despite this, the server API was not affected. Transactions continue to be added to the mempool, and queries are served normally. Although all components had comprehensive monitoring, logging, and alerting, no alerts were triggered because the API was functioning properly.
Details
- Date
- Apr 2, 2023
- Kind
- Hack or exploit
- Method
- Downtime
- How in
- Keys, accounts and infrastructure
- Target
- not stated
- Chains
- Ethereum
Reported by
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ZkSync 2024 · Hack or exploit · undisclosed
ZKsync 2025 · Hack or exploit · $5M
Venus_ZKSync 2025 · Hack or exploit · $200K
ZKsync Ignite 2025 · Hack or exploit · undisclosed
ZkSync 2024 · Hack or exploit · undisclosed
Cite this page
SwanBluechip, "zkSync hack, Apr 2, 2023: undisclosed lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/ht096e47dd52/ (data as of 2026-11-01).