PBL Week 1.docx - PBL Week 1 Vulnerable voicemail:...

PBL Week 1
Vulnerable voicemail: telco-issued PINs insecure
Discussion:
1. Identify the potential risk of keeping the default PIN as mentioned in the case study
above. Analyse the likelihood of an attack in this case.
Scammers can easily get access to voicemails remotely if the default PIN has remained
unchanged, and this will lead attackers to have people's personal information of users.
By using personal information, scammers can easily gain the trust of users or can blackmail
them to get money from them.
2. Justify the reason for Optus for not forcing the customer to change the PIN.
Before allowing the remote access of voicemail most telecom operators force users to