How Vodafone Australia left customers' mobile voicemail accounts exposed to hacking

By Ben Grubb
Updated September 16 2014 - 5:14pm, first published 5:05pm
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae
Shubham Shah discovered a security flaw in the way Vodafone handled voicemail. Photo: Peter Rae

An 18-year-old security researcher from Sydney who found a flaw in Optus' mobile voicemail service has found another vulnerability, this time in Vodafone Australia's voicemail system.