Last updated: April 2026
1. Controller
The controller responsible for data processing on this website and in connection with the app is:
Service Trading and Solutions GmbH
Otto-Vorberg-Straße 3
45549 Sprockhövel
Germany
Phone: 02324 90 44 88 10
Email: info@blacklistener.de
Managing Director: Claus Behrens
2. General information on data processing
We process personal data only insofar as this is necessary to provide this website, communicate with users, comply with legal obligations or provide the functions of the BlackListener Call & SMS app.
Personal data means any information relating to an identified or identifiable natural person, such as name, email address, IP address, phone numbers, communication data or usage data.
3. Legal bases
Depending on the processing activity, we rely on the following legal bases under the General Data Protection Regulation:
- Art. 6(1)(a) GDPR, where consent is obtained.
- Art. 6(1)(b) GDPR, where processing is necessary for contract performance or pre-contractual measures.
- Art. 6(1)(c) GDPR, where a legal obligation applies.
- Art. 6(1)(f) GDPR, where we have a legitimate interest, for example in providing a secure, stable and error-free website.
4. Visiting blacklistener.de
When this website is accessed, technically necessary data is processed so that the website can be displayed in the browser and operated securely. This may include:
- IP address
- date and time of access
- accessed page or file
- amount of data transferred
- browser type and version
- operating system
- referrer URL, if transmitted
- host name of the accessing computer
The processing is based on Art. 6(1)(f) GDPR. Our legitimate interest lies in the technically correct, secure and stable provision of the website and in preventing attacks and abuse.
5. Hosting by IONOS / 1&1
This website is hosted by an external hosting provider:
IONOS SE
Elgendorfer Str. 57
56410 Montabaur
Germany
The hosting provider processes technical data on our behalf when this website is visited, to the extent necessary for providing and securing the website. This may include IP address, date and time of access, accessed pages or files, browser and operating system information, referrer URL and server log files.
The processing is based on Art. 6(1)(f) GDPR. Our legitimate interest lies in secure, fast, stable and error-free website provision and in preventing misuse and attacks.
An agreement for commissioned processing under Art. 28 GDPR exists or is included through the contractual terms with IONOS. For older contracts, this should be checked in the IONOS customer account if necessary.
6. Cookies and similar technologies
This theme itself does not set tracking cookies, does not load external fonts and does not integrate external analytics or advertising services.
WordPress may set technically necessary cookies, for example for logged-in administrators or to secure login sessions. These cookies are required for operating the website.
If plugins, analytics tools, embedded content, external fonts, maps, videos, social media elements, contact forms or marketing services are added later, this privacy policy must be updated accordingly. If non-essential cookies or similar technologies are used, prior consent may be required.
7. Contacting us
If you contact us by email, phone or other means, we process the information you provide, such as name, contact details, content of the request and time of contact.
The processing is carried out to handle the request. The legal basis is Art. 6(1)(b) GDPR if the request relates to a contract or pre-contractual measures, and otherwise Art. 6(1)(f) GDPR based on our legitimate interest in handling requests.
The data is deleted once the request has been finally processed and no statutory retention obligations prevent deletion.
8. No analytics, no advertising, no tracking on this website
In the delivered theme version, this website does not use web analytics services, advertising networks, social media tracking pixels or profiling for advertising purposes.
If such services are installed or activated later, this privacy policy must be updated before use.
9. External links
This website may contain links to external websites. If you click an external link, you leave this website. The respective provider is responsible for data processing on external websites.
10. Data protection in the BlackListener Call & SMS app
BlackListener Call & SMS is a protection and documentation app for Android. The app helps users identify unwanted calls and SMS, block numbers, document incidents and save evidence locally on the device.
10.1 Principle of local processing
BlackListener Call & SMS processes personal data primarily locally on the user’s device. The app does not automatically transfer SMS, call or incident data to own servers, advertising networks or analytics providers.
Data may be transferred only if users actively use functions such as export, sharing, opening external apps, backup, restore or contacting external services.
10.2 Data categories in the app
- phone numbers
- SMS content
- call information
- contacts, if contact selection is used
- incident notes created by users
- photos or documentation images
- export and backup files
10.3 Purposes of processing in the app
- identifying and filtering unwanted communication
- blocking phone numbers
- managing calls and SMS within the intended Android framework
- documenting incidents
- creating exports and backups
- displaying protection and status information inside the app
10.4 Android permissions
The app may use Android permissions where required for the respective function. These may include:
- reading, receiving and sending SMS
- reading call logs
- reading contacts
- showing notifications
- foreground service
- start after device reboot
These permissions are used only to provide the respective protection, communication and documentation functions. They are not used for advertising, profiling, analytics or unrelated background data collection.
10.5 No advertising and no tracking in the app
BlackListener Call & SMS does not use advertising SDKs, tracking for advertising purposes or analytics services for profiling.
10.6 Storage, export and backup
Data is generally stored locally on the device. Export or backup files may be additionally protected depending on the selected function.
If users export, share, back up or open data with external apps, this data may be stored outside the app or transmitted to third parties.
10.7 Retention and deletion in the app
Data stored in the app generally remains on the device until it is deleted by the user inside the app or by uninstalling the app.
Exported or externally stored files may need to be deleted separately by the user.
11. Recipients of personal data
Personal data is disclosed only where this is necessary to provide the website, handle requests, comply with legal obligations or as a result of an active action by the user.
12. Transfers to third countries
This theme does not provide for transfers of personal data to countries outside the European Union or the European Economic Area.
If external services involving third-country transfers are integrated later, this privacy policy must be updated accordingly.
13. Retention period
We store personal data only as long as necessary for the respective purpose or as long as statutory retention obligations apply. After that, the data is deleted or anonymized.
14. Rights of data subjects
- right of access under Art. 15 GDPR
- right to rectification under Art. 16 GDPR
- right to erasure under Art. 17 GDPR
- right to restriction of processing under Art. 18 GDPR
- right to data portability under Art. 20 GDPR
- right to object under Art. 21 GDPR
- right to withdraw consent with effect for the future
- right to lodge a complaint with a supervisory authority
15. Right to lodge a complaint with a supervisory authority
Data subjects have the right to lodge a complaint with a data protection supervisory authority.
For North Rhine-Westphalia, the competent authority is:
Landesbeauftragte für Datenschutz und Informationsfreiheit Nordrhein-Westfalen
Kavalleriestraße 2-4
40213 Düsseldorf
Website: www.ldi.nrw.de
16. No automated decision-making
No automated decision-making, including profiling within the meaning of Art. 22 GDPR, takes place.
17. Updates to this privacy policy
We reserve the right to update this privacy policy if this website, the app, technical processes, services used or legal requirements change.