51Degrees

51Degrees operates as a mobile device detection firm that provides its services to major corporate clients. Headquartered in the United Kingdom, the company focuses on delivering technology that enables organisations to identify and characterise mobile devices accessing their digital platforms. Its core offering is centred on device detection capabilities that support web optimisation, analytics, and targeted content delivery for business customers. The firm’s market positioning is defined by its specialisation in mobile device intelligence within the broader cybersecurity and web technology sectors. While specific details about its size, ownership structure, or subsidiary relationships are not disclosed in the available sources, its client base is described as comprising significant enterprises across various industries.

On 8 May 2016, 51Degrees experienced a security incident in which an unidentified exploit led to unauthorised access to its systems. The company publicly stated that the breach did not result in the exposure of personal data, payment information, or contact details of its users or clients. In response, the organisation closed the vulnerability and implemented additional, unspecified security measures to prevent a recurrence. Authorities were notified, and relevant evidence was supplied to cybercrime units for further investigation. The incident was characterised as isolated, with no subsequent public disclosures or observable malicious activity reported after the initial remediation. This event remains the only publicly documented security breach associated with the firm in the provided records.