---
title: "Data breach at Salt Mobile SA"
description: "Salt Mobile, a Swiss telecom operator, confirmed a security incident on 11 September 2026 after online allegations of a customer data leak surfaced. The company says its main systems were not breached, but that an existing access to a peripheral system was misused. Data potentially exposed includes "
canonical: https://inyourgeek.com/en/fuites-de-donnees/2026-09-11-salt-mobile-sa
type: fuite-de-donnees
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-11
dateModified: 2026-09-11
---
# Salt Mobile SA

Data breach — High

Salt Mobile, a Swiss telecom operator, confirmed a security incident on 11 September 2026 after online allegations of a customer data leak surfaced. The company says its main systems were not breached, but that an existing access to a peripheral system was misused. Data potentially exposed includes names, postal addresses, mobile phone numbers, dates of birth and email addresses; passwords, banking details and order history are not believed to be affected. Salt voluntarily notified Switzerland's Federal Data Protection Commissioner; the exact number of affected customers has not been disclosed.

The combination of name, address, phone number, date of birth and email enables targeted, credible phishing or fraud campaigns.

| Fact | Value |
| --- | --- |
| Disclosed on | September 11, 2026 |
| Sector | Telecoms |
| Country | Switzerland |
| Cause | Credential stuffing |
| Severity | High |
| Status | Confirmed |

## Exposed data

- Full name
- Email address
- Phone number
- Postal address
- Date of birth

## What you can do

- Expect phishing attempts quoting your name and this company. A message that knows your details is not legitimate for that reason.
- You can ask the organisation exactly what was exposed about you (right of access), and complain to the DPA if no answer comes within a month.

## Sources

- [Salt Mobile](https://frenchbreaches.com/alertes/salt-mobile-mtx0gdjpa301y7tku9k) — FrenchBreaches
- [Salt alerte sur le vol de données de ses clients : voici ce qui aurait fuité](https://www.watson.ch/fr/suisse/cybercrime/467949601-salt-alerte-sur-un-vol-de-donnees-en-suisse-ce-qui-aurait-fuite) — Watson
- [Salt confronté à une fuite des données personnelles de ses clients](https://www.telesatellite.com/actu/69678-salt-confronte-une-fuite-des-donnees-personnelles-de-ses-clients.html) — Telesatellite
- [Des hackers dérobent des données de clients de Salt](https://www.rts.ch/info/economie/2026/article/des-hackers-derobent-des-donnees-de-clients-de-salt-29354678.html) — RTS
- [Salt victime d'une cyberattaque, des données clients exposées](https://www.cyberattaque.org/salt-victime-dune-cyberattaque-des-donnees-clients-exposees/) — Cyberattaque.org

_Entry built from the cited sources after a corroboration check, then reviewed before publication._

---

Equivalent HTML page : https://inyourgeek.com/en/fuites-de-donnees/2026-09-11-salt-mobile-sa
Published by InYourGeek — https://inyourgeek.com/en/a-propos
Method and safeguards : https://inyourgeek.com/en/methode
Full register : https://inyourgeek.com/en/fuites-de-donnees