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ENISA report looks into causes of large outages of electronic communications services

The European Union Agency for Network and Information Security (ENISA) has published its third annual report about large-scale outages in the electronic communication sector.

The Annual Incidents Report 2013 provides an aggregated analysis of the security incidents in 2013 which caused severe outages. Most incidents reported to regulators and ENISA involved mobile internet and mobile telephony connections. The most frequent causes are system failures affecting mainly base stations and switches.

The annual report is a result of an EU wide incident reporting process which started in 2012, under Article 13a of the Framework Directive (2009/140/EC). Incidents are reported nationally by operators to the National Regulatory Authorities (NRAs). The most severe outages are reported annually by the NRAs to ENISA and the European Commission.

The main findings of the report were:

  • 90 major incidents reported: 19 countries reported 90 significant incidents while 9 countries reported no significant incidents;
  • Mobile networks most affected: Approximately half of the major outages involved mobile internet and mobile telephony;
  • Impact on emergency calls: 21 percent of the major incidents also had an impact on emergency calls (access to 112);
  • The majority (61 percent) of outages were caused by system failures: most of the time these system failures were software bugs, hardware failures and software misconfigurations affecting switches and base stations.
  • Natural phenomena have most impact in terms of user-hours lost: often severe weather (heavy snowfall, storms), led to power or cable cuts, which in turn led to severe outages in terms of user-hours lost. Assets mostly affected were base stations, switches and mobile switching.

Read the report.

•Date: 17th September 2014 • Europe/UK •Type: Article • Topic: ICT continuity

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