Hack history / 2026 / Hack or exploit
Bankr
Hack or exploit on May 19, 2026 · Session Key Compromised
IN REVIEWSOURCES DISAGREE ON DATE OR LOSS · 2 SOURCES
Lost
$170K
sources: $170K to $440K
Returned
none listed
as the sources state it
Rank
#1,541
among thefts by dollars lost
What happened
Bankr paused on May 19, 2026 after $170K was drained from 14 user wallets on Base. Attackers exploited phishing of session tokens or signing keys to make direct transfer() calls, bypassing token approvals.
In review: sources disagree on the loss.
Details
- Date
- May 19, 2026
- Kind
- Hack or exploit
- Method
- Session Key Compromised
- How in
- Keys, accounts and infrastructure
- Target
- AI Agent
- Chains
- Base
After the theft
- Victims reimbursed
- yes, amount not stated
“Bankr has suspended the affected functionality, launched an investigation, and pledged to fully reimburse all losses from its treasury.” (SlowMist Hacked)
Reported by
Related incidents
Cite this page
SwanBluechip, "Bankr hack, May 19, 2026: $170K lost", Crypto hack history, https://swan-hack-tracker.pages.dev/history/i/htbc1d997713/ (data as of 2026-10-31).