One Article Review
| Source |  AlienVault Lab Blog |
|---|---|
| Identifiant | 8534145 |
| Date de publication | 2024-07-10 10:00:00 (vue: 2024-07-10 10:07:51) |
| Titre | La législation numérique à l'ère de la crypto-monnaie: enquêter sur la blockchain et les crimes cryptographiques Digital Forensics in the Age of Cryptocurrency: Investigating Blockchain and Crypto Crimes |
| Texte | The content of this post is solely the responsibility of the author. LevelBlue does not adopt or endorse any of the views, positions, or information provided by the author in this article. The rise of cryptocurrencies has introduced a new frontier for criminals, presenting unique challenges for investigators. Unlike traditional financial transactions, cryptocurrency transactions are pseudonymous, meaning identities are obscured by cryptographic addresses. This, coupled with the decentralized nature of blockchain technology, necessitates specialized techniques and tools for digital forensics in the age of cryptocurrency. Understanding Cryptocurrency and Blockchain Before diving into forensic techniques, let\'s establish some foundational knowledge: Blockchain: A decentralized, public ledger that records transactions across a network of computers. Each transaction is cryptographically linked to the previous one, forming a secure and tamper-proof chain. Cryptocurrency: A digital or virtual currency secured by cryptography. Bitcoin, Ethereum, and Litecoin are popular examples. The pseudonymous nature of blockchain transactions means that while all transactions are publicly visible, the identities of the parties involved are obscured by cryptographic addresses. Key Challenges in Crypto Forensics Pseudonymity: Unlike traditional bank accounts, cryptocurrency transactions do not directly link to real-world identities. Decentralization: The absence of a central authority complicates efforts to track and freeze illicit funds. Multiple Cryptocurrencies: The diverse landscape of cryptocurrencies, each with unique characteristics, requires adaptable forensic techniques. Forensic Techniques for Investigating Crypto Crimes Blockchain Analysis Transaction Tracing: By analyzing the flow of transactions on the blockchain, investigators can track the movement of funds. Tools like Chainalysis, Elliptic, and CipherTrace offer visualizations of transaction flows, highlighting suspicious patterns. Example Scenario: An investigator traces a series of Bitcoin transactions from a ransomware payment to multiple addresses. Using address clustering, they identify a cluster linked to a known exchange, leading to the suspect\'s identification. Address Clustering: Grouping addresses controlled by the same entity helps link pseudonymous transactions. Techniques like "co-spending" (using multiple addresses in one transaction) aid in clustering. Crypto Wallet Analysis Wallet Extraction: Digital wallets store private keys needed for cryptocurrency transactions. Extracting wallet data from devices involves locating wallet files or using memory forensics to recover private keys. Example Scenario: During a raid, law enforcement seizes a suspect\'s laptop. Forensic imaging and subsequent analysis reveal a Bitcoin wallet file. The extracted private keys allow investigators to access and trace illicit funds. Forensic Imaging Creating forensic images of suspect devices ensures data integrity and enables detailed analysis. Tools like FTK Imager and EnCase are used for imaging and analyzing digital evidence. Address Attribution KYC Data: Know Your Customer (KYC) regulations require exchanges to collect user identification information. By subpoenaing exchange records, investigators can link blockchain addresses to real-world identities. Example Sce |
| Notes | ★★★ |
| Envoyé | Oui |
| Condensat | 2013 ability about absence access accountable accounts acquiring across activities activity adaptable adaptive additional address addressed addresses adopt advancements age agencies ahead aid all allow also analysis analyze analyzed analyzing anonymize another any are areas article asset assets assigning associated atomic attribution author authority automatically available bank based been before being between bitcoin blockchain blockchain: blockchains border bridges bridging but can capability case cash central chain chainalysis challenges changing characteristics ciphertrace ciphertrace: cluster clustering clustering: clusters code coins collect combat combating combination combining complicate complicates comprehensive computers confirms considerations constantly content continues continuous contract contract’s contracts controlled cooperation cooperation: corresponding could countries coupled creating crimes criminal criminals critical cross crucial crypto cryptocurrencies cryptocurrencies: cryptocurrency cryptocurrency: cryptographic cryptographically cryptography currency customer cybercriminals darknet data data: decentralization: decentralized demonstrated deploys destination detailed details developed development devices different digital directly discover discussion: disrupted diverse diving does down drug during each ecosystem effectively effectiveness efforts elliptic emerging employed employing enables encase encase: endorse enforcement ensures entities entity essential establish established ethereum ever evidence evolve evolving example examples exchange exchanges executing exit expedite extracted extracting extraction extraction: facilitated fbi file files final financial find flow flows forensic forensics forensics: foresnsics forming forum forums foundational frameworks fraudster freeze from frontier ftk funds future gather grouping has have help helps here highlighting highlights history hold how however identification identify identifying identities identity illegal illicit image imager images imaging impact include: infamous information integrity intelligence intermediaries international introduced investigate investigating investigation investigations investigative investigator investigators involved involves involving issues key keys know knowledge: known kyc labels landscape laptop latest law leading leads ledger legal let levelblue leveraging like likely link linked linking litecoin locating logs maintain maintaining manage market marketplace markets mature meaning means media memory message methodologies methods might mixed mixer mixers: mixing monitoring movement multiple must nature necessitates need needed network new not obscure obscured offer one ongoing online only open operation operators origin originating osint other outlook parties patterns payment platform platforms: plays points ponzi popular pose posed positions post posts potential potentially presenting previous primary prime private professionals programs proof provide provided pseudonymity: pseudonymous public publicly raid ransomware real recognition: records recover regarding regulations related remain representing require requires responsibility reveal revealing reveals rise road robust role sales same scenario: scheme searching secure secured seize seized seizes seizure: self sent series serves services shared shut significant silk simultaneously smart smartphones social solely some source space specialized specific spending stay stolen storage store strong study: subpoenaing subsequent successful such surrounding suspect suspects suspicious swaps: systems tackle tactics tagging: takedown tamper techniques technologies technology then these thorough through token tokens too toolkit tools tools: tornado trace traces tracing: track tracking traditional training transaction transactions transparent uncover understanding unique unlike used user uses using valuation varying victims views vigilant virtual visible visualizations wallet wallets wasabi where which will without world your |
| Tags | Ransomware Tool Studies Legislation |
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