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Incident

Arbetsgivarverket

Incident posture

Attack window
Jan 2024
Location
Sweden
Status
Historical
CIA posture
Available to members
Updated
2026-01-26 12:03

Linked entities

Victim
Arbetsgivarverket
Threat actors
0 actors
Sources
1 source

Timeline

Occurred
Jan 2024
Discovered
Pending
Disclosed
Pending
Resolved
Pending

Summary

A cyberattack targeting system provider Tietoevry disrupted operations for Arbetsgivarverket by compromising its Primula payroll platform. The incident forced the organization to direct affected members to external government support channels for guidance and updates. Service interruptions impacted payroll processing capabilities, though the full scope of operational or data consequences remains unspecified. The attack highlights supply chain vulnerabilities affecting critical administrative functions, with response efforts coordinated through Sweden's national service center resources.

Motives

Detailed motive labels are available to members.

2 motives

TTPs

Detailed technique labels are available to members.

5 techniques

Description

On January 20, 2024, a cyberattack targeted Tietoevry, a systems provider supporting multiple Swedish organizations, resulting in operational disruptions to its Primula payroll management platform. The attack directly impacted Arbetsgivarverket, a key Swedish employer association relying on Primula for salary processing services. While technical specifics of the intrusion vector, attacker identity, and full intrusion timeline remain undisclosed in public reporting, the incident caused confirmed service degradation within Primula’s infrastructure. This disruption impaired normal payroll operations for Arbetsgivarverket’s member organizations, though the precise scale of affected employees or duration of processing delays was not quantified in initial communications. No evidence of data exfiltration or ransomware deployment was cited in available sources at this stage.

Arbetsgivarverket responded by directing affected members to Statens servicecenter (the Swedish State Service Center) for incident-related guidance and updates, indicating coordination with governmental entities to manage communications. The organization did not disclose internal containment measures, forensic investigations, or system restoration timelines, focusing instead on redirecting users to centralized official channels. Tietoevry’s broader incident response protocols for the attack remained unspecified in the context of Primula’s disruption. The cyberattack’s primary confirmed consequence was operational downtime within a critical payroll management system, highlighting dependencies on third-party service providers for essential administrative functions. No ancillary impacts on employee salary disbursements, data integrity breaches, or regulatory repercussions were detailed in the immediate aftermath.

Sources

Sources available to members: 1 source.

CSIDB