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Digital crime against your client: from the police report to an investigation that moves

The client filed the police report three months ago. The investigation has not moved, nobody requested the retention of the records, and the provider's retention period is about to run out.

The course

Why this course

Technical classification, criminal complaint with a technical annex, retention of records and following the police investigation.

Digital crime usually reaches the police station as a narrative: "they hacked my account", "I fell for a scam". A narrative without traces becomes a police report that waits. While it waits, the records that would identify the perpetrator expire: as a rule, six months at the application provider and one year at the connection provider.

The victim's lawyer has more tools than they use. The CPP (Brazilian Code of Criminal Procedure) lets the victim request investigative steps and bring to the Public Prosecutor's Office the facts, authorship, time, place and supporting evidence. The Marco Civil da Internet (Brazilian Internet Framework) allows the police authority to ask the provider to keep the records for longer.

The course shows how to turn the narrative into a criminal complaint with a technical annex, what to request in the first days, how to follow the investigation and what not to do: investigate on your own, let IT touch the equipment, expose the company's vulnerability in the police report.

Length2 hours
TrackFraud and digital crime
FormatIn person or live online, open class or in-house. Taught in Portuguese, under Brazilian law
Who it is forCriminal, corporate and family lawyers who act for victims; in-house legal and compliance teams.
InstructorAdriano Vallim, Forensic Expert and Digital Crime Specialist
CertificateCertificate of attendance stating the course hours, for every participant

I want this course

Pick as many courses as you like: they are kept and arrive ticked on the registration form.

By the end, you will be able to

What changes in your next case

  • Relate each conduct to the trace that proves it, in the criminal offences most common in digital crime.
  • Build the technical annex to the criminal complaint: timeline, traces with hash, accounts and services.
  • Ask the police authority for the precautionary retention of records before they expire.
  • Request investigative steps with the technical data the authority needs to carry them out.
  • Avoid the errors that destroy the evidence or expose the company.
  • Recognise when the perpetrator is abroad and what cooperation requires.
Programme

2 hours, block by block

0:00
Opening: fake profiles and a perpetrator abroad 15 min
  • A public case of fake profiles
  • A police report that waits, a complaint that moves
  • The trace as the starting point
0:15
From conduct to trace 20 min
  • Intrusion into a device and the victim's representation
  • Electronic fraud and theft
  • Extortion, stalking, false identity, offences against honour
  • Server abroad
0:35
The criminal complaint with a technical annex 35 min
  • What the CPP asks of the victim
  • The index of the technical annex
  • Precautionary retention of records
  • Exercise: building the index
1:10
During the investigation 15 min
  • Request for investigative steps
  • Official examination and party-appointed expert
  • Budapest Convention
1:25
What not to do 15 min
  • Investigating on your own
  • IT on the equipment
  • The vulnerability exposed in the police report
1:40
Questions and cases from the audience 20 min
  • Cases from the room and checklist review
Cases in class

The cases used in class

REAL CASE · ANONYMISED

Fake profiles that extorted victims in several countries

An investigation of about two months into a network of fake profiles that used a journalist's images to run scams. Technical flaws in the criminals' anonymisation tool made it possible to identify the real connection address and locate the person responsible abroad. The material was forwarded to the authorities.

Related page →

REAL CASE · ANONYMISED

The institution's account and the shops' cameras

A financial institution was hacked, and the attackers created virtual cards in customers' names. The purchases made with the cards became a source of authorship: the shops' cameras recorded the perpetrators' faces and vehicles. The police identified those involved and recorded their personal details.

Related page →

REAL CASE · ANONYMISED

The mini computer hidden on the network

A company found on its internal network a mini computer with its own 4G modem, which had scanned the machines. The remote access keys, the configured Wi-Fi networks and the examination of the SIM card were used to point to the perpetrator. IT had handled the device, and the fingerprints were lost.

Related page →

Practice and materials

Ready to use the next day

Hands-on exercise

In groups, the class receives an illustrative example: a shop's social media account is hacked, and the intruder posts fake offers and receives payments from customers by Pix (Brazil's instant payment system). In 15 minutes, each group builds the index of the technical annex: timeline, traces to preserve, records for precautionary retention and what stays out so as not to expose the shop.

Materials provided
  • Outline of the technical annex to the criminal complaint: the index that turns a narrative into a demonstrated fact.
  • Table of conduct, criminal offence and trace: what to prove for each conduct.
  • Data sheet for precautionary retention and investigative steps: the technical data the authority needs to receive.
  • Checklist for the victim's first 24 hours: what to do and what not to do.
Questions on the topic
Do I need an expert to file the police report?
No. The police report should be filed promptly, and the technical annex can follow as a supplement. What cannot wait is the preservation of the phone, the accounts and the records.
Can the police ask the provider to retain the records?
Yes. The police authority may request, as a precaution, retention for a longer period (Marco Civil da Internet, arts. 13, § 2º, and 15, § 2º) and has 60 days to ask the judge for access. The lawyer provides the service, account, period and time zone.
What if the perpetrator is abroad?
The investigation proceeds through international cooperation. In 2023 Brazil promulgated the Budapest Convention, which provides for the expedited preservation of data at the request of another country. A server abroad also increases the penalty for electronic fraud.

Laws and rulings discussed

Brazilian Penal Code (CP), arts. 154-A, 154-B, 155, §§ 4º-B and 4º-C, and 171, §§ 2º-A and 2º-B  ·  Law 15,397/2026, art. 3º  ·  CP, arts. 141, § 2º, 145, 147-A, 158 and 307  ·  Brazilian Code of Criminal Procedure (CPP), arts. 5º, 14, 27, 38, 39, 70, § 4º, and 159, §§ 3º and 4º  ·  Marco Civil da Internet (Brazilian Internet Framework), arts. 13, §§ 2º to 4º, and 15, § 2º  ·  Law 12,735/2012, art. 4º  ·  Decree 11,491/2023  ·  Binding Súmula 14 (STF, Brazilian Supreme Federal Court)

See also

Digital Authorship and Subscriber Data Disclosure →   Representative Cases →   Digital Counter-Espionage →   For Lawyers →   See all courses →

Bring this course to your firm

Open class or in-house for your team, in person or online. Tell us the group size and preferred date: you will hear back within 24 business hours.

I want this course

The technical evidence your case requires. The authority courts respect.

Initial feasibility consultation at no cost. Reply within 24h on business days.
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