Clarify measure and data type.
First distinguish whether a device was seized, existing data were analysed or communications were monitored. Each level has separate requirements.
Appeals
Phones and chats in Austrian criminal proceedings: surveillance, seizure and legal remedies
Phones and chats in Austrian criminal proceedings: surveillance, seizure, analysis, file access and legal remedies under the StPO.
Your personal attorney
Mag. Christopher Angerer, Rechtsanwalt
Your lawyer for criminal defence
Criminal proceedings are a matter of trust. One lawyer who walks with you from the first consultation through to the trial, everything from one hand.
31 July 2026 · Mag. Christopher Angerer, Rechtsanwalt
Phones, messengers and chat histories are often central evidence in criminal proceedings. They may enter the file through seizure of a device, analysis of existing data or measures under the StPO.
For suspects it is crucial to identify which measure was actually taken, which data are affected and whether legal remedies are available. This post provides general information and does not replace review of the concrete file.
Stay informed. New updates from the Brandauer network and current posts are available at brandauer-news.at.
Quick assessment
Which question should be clarified first?
The first response depends on the pending measure and the documents already available.
Already know you want to send an enquiry? Go straight to the contact form.
Which situation is closest?
Choose the situation that best matches your current position.
All paths at a glance
Overview of all answers.
Which phone or chat measure is involved? →
Check device, copy and file status.
For phones or laptops, seizure records, data copies, search terms and scope of analysis matter. Deleted or third-party data can also become disputed.
Only comment on chats after preparation.
Chats often appear clearer in the file than they were in context. Any statement should wait until the evaluated messages are known completely.
Check remedies and admissibility.
Applications or objections may be available against certain investigative measures or rights violations. Time limits and file status are decisive.
Which phone or chat measure is involved?
Which phone or chat measure is involved?
In criminal proceedings, seizure of a device, forensic analysis of existing data and monitoring of communications must be distinguished. These levels are often mixed in everyday language, but legally they differ.
The StPO contains rules on seizure, confiscation, file access and special investigative measures. For suspects, court order, affected period and data actually placed in the file are decisive.
Not every message explains itself. Time, conversation partner, prior and later context and missing parts can change meaning.
Analysis, file access and context of chats
Analysis, file access and context of chats
Chat evidence is often presented in extracts. It must therefore be checked whether the extract is complete, whether translations are accurate and whether metadata support the alleged sequence.
File access under section 51 StPO is central. Without the evaluated data set and logs, it is difficult to assess whether a message incriminates or exculpates.
Where several people use one device, shared accounts or work phones are involved, additional questions arise. Who had access, who actually wrote and how reliable is attribution?
Legal remedies, incidental findings and admissibility
Legal remedies, incidental findings and admissibility
Where communications or data are affected, compliance with legal requirements must be checked. This includes order, scope, duration and proportionality.
Incidental findings may create additional defence issues. It must be clarified whether they may be used and whether they go beyond the original investigative purpose.
From a legal perspective, defence should not only explain isolated chat lines. First review the measure, then data context, then substantive strategy.
Overview
Distinguishing phone, chat and surveillance measures
The right response depends on the type of data access.
| Level | Überblick | Key question |
|---|---|---|
| Seizure | device or storage medium | What was taken and when? |
| Analysis | existing data | Is the extract complete? |
| Surveillance | ongoing communication | Which order exists? |
| Remedy | application or objection | Which rights violation is concrete? |
Process
Four steps for phone and chat evidence.
Technical and legal review belong together.
- 011immediately011immediately
Clarify measure
Distinguish seizure and surveillance.
- 022early022early
Check data set
Assess extract, context and metadata.
- 033before statement033before statement
Check attribution
Clarify user, device and account.
- 044before deadline044before deadline
Plan remedy
Review admissibility and application.
Important: Do not explain chat messages one by one from memory. Review data set, context and file status first.
FAQ
Phones, chats and surveillance: key questions.
May police analyse my phone? +
This depends on seizure, confiscation, order and proportionality. The concrete process must be reviewed from the file.
Are chat messages always clear evidence? +
No. Context, conversation partner, timing, completeness and attribution can significantly change meaning.
Is this post advice in an individual case? +
No. It provides general information. The concrete assessment depends on the file, allegation and evidence.
Related topics
You might also be interested in
Seizure and confiscation
Further guidance on classification and the next step.
House search in Austria
Further guidance on classification and the next step.
File access under section 51 StPO
Further guidance on classification and the next step.
Evidence motion in criminal proceedings
Further guidance on classification and the next step.
Cybercrime and data offences
Further guidance on classification and the next step.
Legal remedies topic overview
Further guidance on the relevant topic page.
Topics
surveillance of communicationsphonechatStPOseizurelegal remedies
Interview, house search, indictment?
In criminal matters every hour counts. Call us directly or send an email, callback within one business day, earlier in urgent cases.
Contact
A direct line to the firm.
Address
BRANDAUER Rechtsanwälte GmbH Giselakai 51 5020 Salzburg
Phone
+43 660 2407152