Peritaje informático de WhatsApp con análisis forense de un teléfono Android conectado a un ordenador

Digital forensic analysis of WhatsApp messages

WhatsApp messages are increasingly used as digital evidence in legal proceedings. When a conversation is relevant to prove or challenge certain facts, its analysis should not be limited solely to what appears on the phone screen, but may require examination of the device and the data stored by the application in order to assess its origin, authenticity and integrity.

A paper printout, screenshot or exported conversation may be useful for displaying the messages, but they do not, on their own, contain all the information that may be available on the device and within the databases and files associated with WhatsApp. A forensic examination may require the extraction and preservation of this data in order to analyse the messages, participants, dates, attachments, identifiers and other available records together.

In this type of examination, it is important to maintain a cautious conclusion. A forensic analysis should not present the authenticity of a conversation as an absolute certainty, but rather assess the available evidence and determine whether or not technical indications of manipulation are observed.

What do we analyse in a WhatsApp forensic examination?

  • Preservation and acquisition of evidence: identification and preservation of the device and the data under examination, documenting the actions performed in order to maintain their traceability and integrity throughout the forensic process.
  • Forensic extraction of the WhatsApp database: acquisition, when permitted by the characteristics of the device and the available level of access, of the databases and files associated with WhatsApp in order to preserve and analyse the information stored by the application beyond its simple visual representation on screen.
  • Analysis of the database and conversations: examination of the available records in order to relate messages to their participants, dates, identifiers, groups and other associated information, checking their correspondence and consistency within the conversation under analysis.
  • Origin, authenticity and integrity: joint analysis of the device, conversations, databases and other available elements in order to assess their provenance, their correspondence with the records examined and whether or not technical indications of manipulation are observed, always limiting the conclusions to the scope of the available evidence.
  • Attachments and multimedia content: examination of photographs, documents, audio files, voice messages and videos associated with the messages, comparing their relationship with the conversations and with the records available on the device.
  • Deleted messages and residual data: search for deleted messages, records or files when the characteristics of the device, system and preserved data technically allow their recovery or identification.
  • Counter-examination of WhatsApp conversations: review of the device, conversations and reports submitted by the opposing party in order to determine whether the conclusions reached are supported by the evidence examined and by the methodology applied.

Do not put the judicial assessment of your digital evidence at risk Require an official university degree in Computer Engineering

Spanish Law 12/1986 of 1 April recognises the full professional powers and responsibilities of technical engineers within their respective fields of specialisation and expressly includes the preparation of expert assessments, studies and reports .
In the field of information technology, the Resolution of 31 March 2026 of the General Secretariat for Universities expressly includes, among the competences associated with official university qualifications leading to the profession of Technical Engineer in Information Technology, the knowledge required to carry out measurements, calculations, valuations, appraisals, expert assessments, studies and information technology reports .
Entrusting a digital forensic examination to a person who cannot provide evidence of an official university degree in Computer Engineering may seriously compromise the defence of the case. The opposing party may challenge the expert’s qualifications, the methodology applied and the technical reliability of the conclusions, weakening the evidential value of the expert report and placing at risk digital evidence that may prove decisive in the proceedings.
Given the risk of unqualified professional practice in this field, before commissioning a digital forensic examination, make sure that the professional holds an official university degree in Computer Engineering , has proven experience, is professionally registered and possesses specific knowledge of the subject matter under examination.
Qualifications, experience, registration with officially recognised professional bodies, rather than mere membership of private associations , the methodology applied, the proper preservation of the chain of custody and respect for fundamental rights are essential elements in providing the court with an expert report that is technically rigorous, reliable and defensible before the court .
In our Frequently Asked Questions section, we explain how to verify the official qualifications, professional registration and legal authorisation of a digital forensic expert witness.

Why hire a digital forensic expert from FORENSICTECH ?

At FORENSICTECH , we provide every client with a team of qualified digital forensic experts under the direction of Hossaín Mimón, a registered digital forensic expert witness . Our objective is to provide the proceedings with digital evidence that is technically sound, traceable and understandable to lawyers, judges and courts.
By engaging our services, you benefit from:
  • Digital forensic experts holding an official university degree in Computer Engineering, registered with officially recognised professional bodies and legally authorised to prepare and defend expert reports before the Spanish courts.
  • Experience and specialisation in digital forensics and digital evidence , with each analysis adapted to the specific circumstances and requirements of the proceedings.
  • Forensic tools and specialised software for carrying out rigorous, verifiable and technically reliable analyses.
  • Professional methodology and proper preservation of the chain of custody , essential for maintaining the integrity, traceability and reliability of digital evidence.
  • Clear, well-founded and comprehensible expert reports , with an orderly presentation of the methodology applied, the results obtained and the conclusions reached.
  • The option of professional body certification of the expert report , where appropriate or requested by the client, as verification of the expert’s identity and professional authorisation and of the correct formal presentation of the document.
  • Court testimony and technical assistance at trial , with the ability to explain and defend the conclusions of the expert report before the court.
  • Services throughout Spain , with availability to participate in legal proceedings anywhere in the country.
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