Massachusetts Federal Cybercrime Defense Attorney

Arrest, Investigation, and What Happens First

Federal cybercrime investigations in Massachusetts do not begin with a knock at the door. They begin with a report from a financial institution, a corporate victim’s incident response team, or a federal agency whose systems were accessed without authorization. By the time any of this becomes visible to the target — through a search warrant, a seizure of devices, or an interview request from FBI agents — the investigation may have been running for six months or more.

The earliest signals are recognizable. FBI agents may contact current or former employers, colleagues, or service providers. A grand jury subpoena may arrive at an internet service provider seeking subscriber information, connection logs, or email records linked to an account or IP address. Federal agents may conduct unannounced interviews under the guise of a routine inquiry — without disclosing that the subject of the conversation is a target, not a witness.

Search warrants in cybercrime investigations are sweeping. They authorize the seizure of computers, hard drives, mobile devices, cloud accounts, and any storage media that may contain evidence. Device images are forensically preserved and analyzed using tools that recover deleted files, reconstruct browsing histories, and map communication metadata across years of digital activity. By the time a search warrant is executed, the government typically already has substantial evidence from third-party providers that does not require the defendant’s devices at all.

None of these events require a response without defense counsel. Speaking to federal investigators during the investigation phase — even to deny involvement, to explain an innocent interpretation, or to express willingness to cooperate — creates a record that prosecutors and agents will characterize in the terms most favorable to the government’s theory. The first 24 to 72 hours after any visible signal of a federal cybercrime investigation demand immediate legal counsel, not independent engagement with investigators.

The Charges and What the Government Must Prove

Federal cybercrime prosecutions in Massachusetts are built on a concentrated set of statutes. Understanding what the government must prove — and where the evidence is most vulnerable — is the foundation of every defense.

Computer Fraud and Abuse Act (18 U.S.C. § 1030) is the primary cybercrime statute. It criminalizes unauthorized access to a protected computer with intent to defraud or obtain information, intentional damage to protected computers, and trafficking in passwords or access credentials. The statute’s breadth is its defining feature: virtually every internet-connected device qualifies as a “protected computer,” and the government’s ability to aggregate counts — each unauthorized login, each data exfiltration event, each instance of credential trafficking — produces sentencing exposure that bears no relationship to the apparent scale of the conduct. The statute requires the government to prove that the access was “without authorization” or “exceeded authorized access,” and that disputed boundary is frequently the most consequential factual question at trial.

Wire fraud (18 U.S.C. § 1343) accompanies nearly every cybercrime indictment involving financial gain. It requires a scheme to defraud and the use of wire communications in furtherance of that scheme — a standard that encompasses every email, every network transmission, and every electronic financial transaction. Each discrete communication becomes a separate count, and wire fraud carries up to twenty years per count. Wire fraud is also the gateway charge in federal white collar crime prosecutions that overlap with cybercrime conduct.

Aggravated identity theft (18 U.S.C. § 1028A) is charged when the government alleges that stolen identity information — credentials, social security numbers, financial account data — was used in connection with another felony. It carries a mandatory consecutive two-year sentence that cannot be reduced, suspended, or run concurrently with any other term. In Boston, aggravated identity theft counts are commonly added to CFAA and wire fraud indictments, substantially increasing the minimum sentence regardless of guidelines calculations.

Access device fraud (18 U.S.C. § 1029) covers the trafficking, production, or use of unauthorized access devices — account numbers, credit card data, authentication tokens, and similar credentials. It is frequently charged alongside CFAA counts in cases involving stolen financial data or credential theft.

Money laundering (18 U.S.C. § 1956) is added to cybercrime indictments when the government can allege that proceeds were transferred through cryptocurrency exchanges, money service businesses, or layered financial transactions. It carries up to twenty years per count and triggers mandatory forfeiture of proceeds and instruments of the offense. Cases involving healthcare fraud or government fraud in Massachusetts frequently carry money laundering as a companion count alongside cybercrime charges.

Bail, Device Restrictions, and Pretrial Conditions

Federal cybercrime defendants in Massachusetts are not automatically detained, but pretrial conditions in technology-related cases are frequently severe and specifically calibrated to the nature of the alleged conduct.

The standard conditions — surrendering passports, restricting travel, and regular contact with pretrial services — apply in most cases. But cybercrime defendants face an additional layer of technology-specific restrictions that directly affect their professional and personal lives. Courts regularly order defendants to refrain from using computers, the internet, or specific software platforms as a condition of pretrial release. For defendants whose employment involves technology — software engineers, IT professionals, researchers, or executives — these conditions can effectively prevent lawful employment during the months or years of pretrial litigation.

Device and account monitoring is also common. Courts may authorize or require monitoring software on any device the defendant is permitted to use, warrantless searches of devices as a condition of release, and restrictions on the use of encryption or anonymizing tools. Challenging the scope of technology-related pretrial conditions — identifying which restrictions are necessary to address a legitimate government concern and which are overbroad impositions that serve no purpose beyond punishment before conviction — is urgent pretrial work that experienced federal defense counsel must address at the initial appearance.

The government may also move to restrain cryptocurrency holdings or financial accounts it associates with alleged criminal proceeds. An ex parte asset restraint, entered without prior notice to the defendant, can take effect immediately and affect both personal and professional financial resources. Challenging an overbroad restraint order — distinguishing assets properly subject to forfeiture from legitimate property — requires immediate and technically sophisticated defense engagement from the moment the order is entered.

The Evidence That Usually Decides These Cases

Federal cybercrime prosecutions are digital document cases built on technical evidence that most defendants cannot effectively evaluate without expert assistance. The government’s forensic advantage is substantial — and it compounds the longer a defendant waits to retain experienced defense counsel.

Network and server logs are the foundation of the government’s attribution case. Prosecutors use connection records from internet service providers, corporate network logs, authentication systems, and cloud service providers to trace activity to a specific IP address, device, or account. The evidentiary chain from IP address to person is rarely as clean as the government presents it: dynamic IP assignments, shared network environments, VPN usage, and compromised devices can all complicate attribution. Defense forensic analysis of the government’s attribution methodology — including the reliability of the log data, the potential for error in the chain from raw logs to defendant identification, and alternative explanations for observed network activity — is critical to challenging the government’s theory at trial.

Device forensics — images of seized computers, phones, and storage media — typically form a second evidentiary layer. Government forensic examiners testify about recovered files, deleted content, browser history, application usage, and metadata that the government characterizes as consistent with the alleged conduct. Defense review of the forensic image, testing of the government’s methodology, and identification of alternative interpretations of the recovered data can challenge the government’s narrative without requiring the defendant to testify about the contents of seized devices.

Cryptocurrency transaction records are increasingly central to cybercrime prosecutions in Massachusetts. Federal investigators use blockchain analytics platforms — Chainalysis, CipherTrace, and similar tools — to trace cryptocurrency flows from alleged criminal activity through exchanges and conversion to traditional currency. The government typically presents this analysis through expert witnesses. Defense experts who can challenge the methodology, identify weaknesses in the tracing analysis, or demonstrate that mixing services, peer-to-peer transactions, and exchange aggregation make reliable attribution impossible are essential to cases where cryptocurrency is a significant element.

Cooperating witnesses and co-defendants present a distinctive challenge in multi-actor cybercrime cases. The government’s ability to offer plea agreements with cooperation credit to participants in online criminal forums, darknet marketplaces, or fraud rings creates witnesses who have specific knowledge of the alleged conduct and strong incentives to provide testimony that satisfies the government’s narrative. Challenging their credibility — their prior inconsistent statements, the benefits received in exchange for cooperation, the degree to which their accounts have been shaped by prosecution preparation — is often the most productive cross-examination territory at trial.

Search warrant scope and Fourth Amendment challenges are frequently available in cybercrime cases. General warrants authorizing seizure of “all digital devices” or “all records” on a computer system often exceed constitutional limits on particularity and breadth. The government’s acquisition of stored communications from third-party providers under the Stored Communications Act (18 U.S.C. § 2701 et seq.) must comply with specific statutory procedures. Data obtained from overseas servers raises complex questions of international law and treaty compliance that can affect admissibility at trial.

Defense Strategy in Federal Cybercrime Cases

Federal cybercrime defense requires technical sophistication that generic criminal defense firms are not equipped to provide. The government’s digital forensic capabilities are substantial, and the evidentiary foundation of its cases is built before defense counsel typically sees a single document. The defense must close that gap — quickly, systematically, and with technical expertise equal to or exceeding the government’s.

Early case triage begins with digital preservation. The moment Marin & Murphy is retained in a federal cybercrime matter, the first priority is identifying and preserving all digital evidence in the client’s lawful possession: devices, accounts, logs, communications, and records that may provide context, corroboration, or challenge the government’s attribution theory. Evidence that exists today may not exist tomorrow, and the defense’s ability to reconstruct the relevant technical environment depends on early preservation of materials the government has not yet seized or subpoenaed.

Technical expert engagement is not optional. Cybercrime defense requires forensic experts who can independently analyze device images, review network logs, assess attribution methodology, and provide credible counter-analysis to the government’s forensic witnesses. Retained defense experts who understand the technical limitations of the government’s tools — and who can articulate those limitations clearly to a jury in the Moakley Courthouse — are essential to any viable trial defense. Expert selection begins at case intake, not in the months before trial.

Motion practice in cybercrime cases is technically demanding. Suppression motions challenging the constitutional sufficiency of search warrants for digital devices require detailed analysis of the warrant’s particularity, the affidavit’s factual basis, and the scope of the resulting search. Challenges to the government’s third-party data collection — from ISPs, cloud providers, and email platforms — raise issues under the Fourth Amendment, the Stored Communications Act, and, in international cases, treaties and foreign law. These challenges are most effective when raised early and fully developed before trial.

The attribution question is often the central defense. In many cybercrime prosecutions, the government’s case rests on the claim that a specific individual controlled a specific device, account, or network resource at a specific time. That attribution is almost never as certain as the government presents it. Shared devices, compromised credentials, botnet activity, and dynamic network environments create genuine uncertainty about who was operating a system at a given moment. A defense that targets the government’s attribution methodology — without requiring the defendant to testify — focuses the jury on the question the government must answer: not whether bad conduct occurred, but whether this defendant was the person responsible.

Sentencing mitigation in cybercrime cases is a separate discipline. Federal sentencing guidelines in cybercrime cases involve complex loss calculations, victim enhancements, and sophisticated-means adjustments that can dramatically increase the advisory guidelines range. Defense counsel who understands how to challenge the government’s loss calculation methodology — contesting both the amount of loss and the proper method of calculation under U.S.S.G. § 2B1.1 — can substantially affect the sentencing outcome regardless of the verdict. Mitigation work begins at intake and runs in parallel with trial preparation.

Experience, Credibility, and Why It Matters Here

Federal cybercrime defense is not a niche subspecialty that can be improvised. The technical complexity of the evidence, the sophistication of the government’s investigation, and the severity of the potential sentencing outcomes require defense counsel with actual federal trial experience across complex evidentiary cases.

If conviction has already occurred, post-conviction review under 28 U.S.C. § 2255 can test whether constitutional violations infected the result.

Attorney Stefanie A. Murphy of Marin & Murphy Law Firm brings to federal cybercrime matters the same forensic skepticism and trial-ready approach she has applied to high-stakes federal and state cases throughout her career. Her work in post-conviction DNA litigation — representing a client in a decades-long wrongful conviction case covered by the Providence Journal, where newly discovered forensic evidence challenged the government’s original evidentiary narrative — reflects the same capacity for rigorous, evidence-driven analysis that federal cybercrime defense demands. Scientific and technical evidence can be presented with authority and certainty that does not survive close examination, and challenging that authority requires both technical preparation and courtroom command.

Attorney Stefanie A. Murphy is admitted to the U.S. District Court for the District of Massachusetts (D. Mass. Federal Bar #663646). Matthew T. Marin is admitted in Massachusetts state courts (BBO #672462).

Her published work includes co-authoring the authoritative A Practical Guide to Trying DUI Cases in Rhode Island (2nd Edition 2024, MCLE New England), a resource that addresses the reliability and admissibility of scientific and technical evidence in criminal prosecutions — directly applicable to the expert testimony and forensic methodology challenges central to cybercrime defense.

The firm’s representation across serious felony matters — including jury trials resulting in acquittal on murder and firearms charges, as reported by the Providence Journal — demonstrates readiness to contest the government’s case at trial when the evidence warrants it, rather than defaulting to plea resolution as a substitute for preparation.

Marin & Murphy handles federal matters across the District of Massachusetts, with coverage of all three courthouse locations: the Moakley Courthouse in Boston (Eastern Division), the Donohue Federal Building in Worcester (Central Division), and the U.S. Courthouse in Springfield (Western Division). The firm’s existing federal practice in Rhode Island and Connecticut — operating across multiple federal districts in New England — provides cross-jurisdictional knowledge relevant to cases with multi-district or interstate dimensions, which are common in federal cybercrime prosecutions.