Glasgow City Council has warned the data of customers may have been stolen after the authority was hit by a major cyber attack. The local authority reported the incident on Wednesday, saying the attack was disrupting a number of online services. The council鈥檚 ICT supplier CGI discovered the cyber threat on servers managed by a third-party supplier on Thursday last week. The breach is being investigated by Police Scotland and the National Cyber Security Centre, alongside the Scottish Cyber Coordination Centre. For the best news from home, subscribe to the Scotsman daily newsletter A statement issued by the council said: 鈥淚n the meantime, taking affected servers offline has disrupted a number of our day-to-day digital and online services. 鈥淭his includes viewing and commenting on planning applications; paying penalty charges for parking or bus lane contraventions; reporting school absences, and ordering certificates from city registrars. 鈥淪ome online diaries and calendars are not available 鈥 for example, household schedules for bin collections. Members of Strathclyde Pension Fund are not currently able to access the SPFOnline portal. The loss of web-based services has been caused by the isolation of the servers, rather than the cyber incident.鈥 The statemen added: 鈥淣o council financial systems have been affected in this Incident and no details of bank accounts or credit/debit cards processed by those systems have been compromised.鈥 The incident comes after West Lothian Council was first alerted to a ransomware attack targeting its education network on May 6. All West Lothian schools – 68 primary, 13 secondary and five special needs schools – were affected by the incident.