DeFi Scams: Rug Pulls, Stablecoins and Bridges
Criminal defense in stablecoin scams, DeFi project rug pulls and cross-chain bridge exploits with specialized technical expert evidence.
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Scams in the DeFi ecosystem have evolved to a level of technical sophistication that requires combining classical criminal law with knowledge of decentralized protocols, smart contracts and multi-chain architectures. The criminal lawyer must identify precisely the frontier between the technical exploit (which may be civil or atypical) and the criminal offense (fraud, misappropriation, money laundering).
Rug Pull vs. Soft Pull
The classical rug pull is the massive withdrawal of liquidity by project promoters: after selling the token to investors and creating market appearance, the developers withdraw funds from the pool and abandon the project. When prior deception concurs (false whitepapers, fictitious team, invented audits) it is aggravated fraud (Art. 250 CP). The soft pull is the progressive dilution of value through abusive minting, excessive fees or unilateral changes in the smart contract: criminal qualification is more complex and requires proving initial intent.
Bridge Exploits
Cross-chain bridges (Wormhole, Ronin, Nomad, Multichain) are critical pieces and have suffered multi-million dollar losses due to technical exploits. Criminal qualification depends on who exploits and with what intention. If the exploiter is a black hat who appropriates the funds: fraud, money laundering and, eventually, Art. 264 CP computer offense (damage). If it is a white hat who returns the funds: the conduct may be atypical or covered by necessity defense.
Pool and Liquidity Manipulation
Beyond the rug pull there are conducts of on-chain market manipulation: wash trading to simulate volume, coordinated pump and dump over low-cap tokens, and abuses of MEV (Maximal Extractable Value) such as sandwiching of others' orders. Their criminal fit ranges from fraud (Art. 248 CP) to the offense relating to the market and consumers (Art. 284 CP) when false information is disseminated to alter the price. Proof requires reconstructing the transactions and establishing the coordination.
Private Prosecution in DeFi Frauds
For the victim, private prosecution allows driving the investigation beyond ex officio activity: requesting real precautionary measures over the identified funds, requiring stablecoin issuers to freeze wallets and directing the technical expert evidence. Early coordination between criminal action and administrative freezes on USDC/USDT is what separates partial recovery from total loss.
Penalty Chart
| Type / Scenario | Criminal Penalty |
|---|---|
| Aggravated fraud (Art. 250 CP) | Imprisonment 1-6 years for special gravity or multiplicity of victims. |
| Computer damage (Art. 264 CP) | Imprisonment 6 months to 3 years for exploits damaging systems or data. |
| Criminal organization (Art. 570 bis CP) | Imprisonment 4-8 years for leaders; 2-5 years for members. Applicable to teams of repeat rug pullers. |
* Penalties shown are indicative. The actual penalty depends on case circumstances, applicable mitigating and aggravating factors.
Our Defense Strategy
Exploit / Offense Differentiation
On the accused side, establish that the conduct is civilly reproachable but criminally atypical.
Coordinated International Freeze
For the victim, coordinate criminal action with administrative freezes on USDC/USDT and CEX blockings.
Pre-Constituted Expert Evidence
Secure technical expert evidence with forensic custody before smart contracts are migrated or destroyed.
Crypto Fraud Defence: Scams, On-Chain Tracing, MiCA & Asset Seizure
Crypto-related criminal cases combine classical offences — fraud (Arts. 248-250 CP), money laundering (Art. 301 CP), tax fraud (Art. 305 CP) and criminal organisation (Art. 570 bis CP) — with the technical reality of blockchain: pseudonymous wallets, mixers, cross-chain bridges, stablecoins and DeFi protocols. There is no autonomous "crypto offence": prosecutors must fit the facts into an existing criminal type and prove the on-chain flow with admissible expert evidence. Defence therefore demands both criminal-law expertise and independent blockchain forensics.
Penalty Table: Crypto-Asset Offences
| Offence | Article | Description | Penalty |
|---|---|---|---|
| Basic crypto fraud | Arts. 248-249 | Deception inducing the transfer of crypto-assets (fake broker, fake platform) | 6 months – 3 years |
| Aggravated fraud | Art. 250 | Special gravity, multiplicity of victims or high amount | 1 – 6 years |
| Money laundering with crypto | Art. 301 | Concealing illicit origin via mixers, bridges or exchanges | 6 months – 6 years + fine |
| Crypto tax fraud | Art. 305 | Evaded quota over €120,000 per fiscal year (Form 721) | 1 – 5 years + fine |
| Computer damage / DeFi exploit | Art. 264 | Exploit damaging systems or data (smart-contract attack) | 6 months – 3 years |
| Criminal organisation | Art. 570 bis | Structured group running crypto fraud at scale | 2 – 8 years |
Key Defence Strategies
Independent Blockchain Counter-Expert
Chainalysis, Elliptic or TRM tracing graphs are interpretations, not certainties. An accredited own expert can challenge address clustering heuristics, mixer assumptions and the attribution of a wallet to a specific person.
Market Contingency vs. Deception
A loss is not a crime. Many crypto disputes are investment risk, protocol failure or contractual breach — civilly reproachable but criminally atypical. The defence isolates genuine deception (Art. 248) from ordinary market loss.
Good Faith & KYC Diligence
Documented KYC, lawful source of funds, Form 721 reporting and declared capital gains rebut the knowledge element of laundering and fraud. Willful blindness must be proven, not presumed.
Criminal-Tax Bifurcation
Voluntary tax regularisation can activate the Art. 305.4 CP exemption, while the administrative track (CNMV/SEPBLAC) is handled separately from the criminal process, where defences may diverge.
Key Case Law
The Supreme Court accepts that the appearance of a legitimate trading platform or broker can constitute the 'sufficient deception' of Art. 248: the victim's error is measured against the credibility of the staged operation, not against the abstract diligence of an expert investor.
On-chain tracing is valid evidence but subject to expert contradiction. Traceability of a flow to a wallet does not, by itself, prove the intent (dolo) of its holder; the prosecution must still establish knowledge and control.
Using undeclared crypto gains to make further investments may integrate self-laundering (Art. 301.1) in concurrence with tax fraud (Art. 305), creating double criminal exposure that the defence must dismantle element by element.
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