Bayerischer Rundfunk

Germany has uncovered a mobile network vulnerability that could expose sensitive device information to callers before a phone call was answered.

Tests by Bayerischer Rundfunk found that in some configurations, networks transmitted unique IMEI numbers, phone models, and operating system details.

Germany's Federal Office for the Protection of the Constitution considers the flaw security relevant because such information could assist foreign intelligence services.

Although there is no evidence this particular vulnerability was exploited for espionage.

German operators have begun technical changes while the global mobile industry has been urged to check its networks.

The episode shows how routine telecom systems can create unexpected national security vulnerabilities.

For further information, see Bayerischer Rundfunk, ARD, Tagesschau, and BR Press Office.

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