Overload attack (DDoS): Telecommunications, Switzerland 2026
On the evening of 15 May 2026, several Salt customers had no fixed-line internet for around 40 minutes.
- Incident · 05.2026 · Switzerland
- Evidence: confirmed by an authority
- Overload attack (DDoS)
As of
What happened
According to Salt, it was not a technical fault but a DDoS attack from outside; the mobile network and the networks of Swisscom and Sunrise were not affected. At times, individual Salt subscribers were also difficult to reach from other networks.
- Affected
- Salt
- Industry
- Telecommunications
- Loss
- no reliable figure
- Business interruption
- unknown
- Ransom demanded / paid
- unknown / unknown
- Data affected
- unknown
- Bankruptcy
- no
- Entry point
- Overload attack (DDoS) on the fixed-line internet
What would cyber insurance have paid?
That depends on the terms. Whether those affected were insured: unknown.
-
Loss of income after an attack
Business interruption, only after the waiting period
Mostly covered 7 of 9 business products cover it fully, as an add-on or with limits.
-
Immediate help in an emergency
Hotline, IT forensics, crisis PR and legal advice
Mostly covered 7 of 9 business products cover it fully, as an add-on or with limits.
Overview based on public policy terms, as of 06.11.2026. Only your policy and its general terms and conditions (GTC) are binding. No confirmation of cover.
What we can learn
Even a short outage at the internet provider brings businesses that have only one line to a standstill.
Sources
- Revue mensuelle des cybermenaces, Mai 2026 (opens in a new window) Kanton Waadt, Sicherheitszentrum SOC der DGNSI (gestützt auf Le Temps) · 2026-06
«il ne s’agissait pas d’une panne technique classique, mais d’une attaque externe de type DDoS»