Luxembourg
LUX
Targeted cyberattack causes nationwide POST Luxembourg communications outage
On 23 July 2025, POST Luxembourg suffered a targeted cyberattack designed to disrupt services. Internet, mobile and landline communications were disrupted across Luxembourg from about 4:15 p.m.; emergency numbers were affected before being restored, and LU-Alert messages to POST customers were delayed. By 8 p.m. internet and telephone services had stabilized while remaining services were being restored.
82
Estimated severity
82 / 100
98
Source reliability
98 / 100
Approximate Date
23/07/2025
Targeted Company
POST LUXEMBOURG
Targeted Company Supply Chain Impact
Distribution & Fulfillment
Procurement & Sourcing
Production & Manufacturing
Sales (Retail & Ecommerce)
Warehousing
Service Delivery
Unrecognized Impact
Supply Chain Relations
No information
Geographic Impact
Country Targeted Company
Other Affected Countries
No other affected countries reported
Target country
Luxembourg
Affected countries
Luxembourg
Impacted regions
No information
Operational Impact
Duration
0.16 days
Financial impact (USD M)
No information
Impact types
Service unavailabilityService degradation
Affected sectors
Telecommunications
Affected departments
Information Technology
Attack Profile
Attack types
Exploitation of vulnerability
Attributed threat actors
No information
Sources
Incident Sources
ctie.gouvernement.luhttps://ctie.gouvernement.lu/en/actualites.gouvernement2024%2Ben%2Bactualites%2Btoutes_actualites%2Bcommuniques%2B2025%2B07-juillet%2B25-celulle-crise-post.htmlmaint.gouvernement.luhttps://maint.gouvernement.lu/en/actualites.gouvernement2024%2Ben%2Bactualites%2Btoutes_actualites%2Bcommuniques%2B2025%2B07-juillet%2B23-cellule-crise-post.htmlcert.europa.euhttps://cert.europa.eu/publications/threat-intelligence/cb25-08/