CustodyStress
Archive › Physical coercion
Part of the CustodyStress archive of observed Bitcoin custody incidents
CS-01395

His body was found in the burned car in Vienna's Donaustadt district.

Blocked
Case description
On approximately November 26, 2025, Danylo Kuzmin—a 21-year-old Ukrainian student and son of the deputy mayor of Kharkiv—was murdered in Vienna in a targeted cryptocurrency extortion attack. A classmate and a 45-year-old Ukrainian accomplice lured Kuzmin to the underground garage of the Sofitel hotel, abducted him, and tortured him over several hours to force him to reveal passwords to two cryptocurrency wallets. After the wallets were drained of approximately $200,000, the attackers placed him in the back seat of his Mercedes, doused it with gasoline, and set it alight. His body was found in the burned car in Vienna's Donaustadt district. Austrian forensics established he was dead or dying before the fire was set, based on absence of soot in his lungs.
Custody context
Stress conditionPhysical coercion
Custody systemHardware wallet (single key)
OutcomeBlocked
DocumentationUnknown
Year observed2025
CountryAustria
Structural dependencies observed
Biometric or physical presence
What this illustrates
Access required in-person verification that couldn't be arranged under the circumstances. Access was not recoverable.
Outcome interpretation
Access was not possible under the reported conditions.
Source
Publicly Reported
Evidence type
News article
Evidence link
https://crypto.news/vienna-student-tortured-for-crypto-passwords-burned-to-death-after-wallets-drained/
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Europe accounted for over 40% of global incidents, with France alone recording 19
Hardware wallet (single key) · 2025 Constrained
105 cases involve physical coercion 274 cases involve hardware wallet (single key) View archive statistics →
This archive documents observed custody survivability failures. It does not attempt to document all Bitcoin losses or security incidents. Submit a case
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Framework references
Where Bitcoin Custody Intersects Legal and Fiduciary Authority
Where custody creates gaps in estate planning, fiduciary duty, and professional responsibility.
Professional Scope Boundary Matrix
What each professional or product covers, what they do not, and where gaps form between them.
The Independent Assessment Layer in Bitcoin Custody
How independent diagnostic layers emerge when multiple parties depend on shared infrastructure.
Terms guide
Outcome terms
Survives
Access remained possible under the reported conditions.
Constrained
Access remained possible, but only with delay, dependence, or significant difficulty.
Blocked
Access was not possible under the reported conditions.
Indeterminate
There was not enough information to determine the outcome.
Structural terms
Single-person knowledge
Recovery depended on information or capability held by one individual who was unavailable.
Institutional dependence
Recovery depended on a third-party institution or service that was inaccessible or uncooperative.
Documentation gap
Recovery depended on instructions that were missing, incomplete, or unclear.
Authority mismatch
The person with legal authority to act did not have operational access, or vice versa.
Original text
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