When mobile phone users connect to 3G networks, it is the equivalent of
connecting to a LAN network but without an administrator. With
traditional networks, hackers try to gain access through modems, but
together with security measures provided by ISPs, they generally block
hackers.
LAN networks are usually controlled by IT
technicians with firewalls to prevent hackers from stealing information
but 3G users do not have this security.
Nguyen Minh
Duc, Director of BKIS Security says hackers can use regular 3G
subscriptions to access other devices via Internet Protocol (IP) and
exploit security vulnerabilities.
Duc says the 3G
network in Vietnam does not have the standard configuration or safety
barriers to limit the risk of intrusion from hackers.
Viettel recommends that their clients should take the initiative
themselves by installing antivirus software, antispam and firewall.
Fake phone number annoy cell phone users
Most mobile service providers allow calls from internet based
technology. These calls connect through an ISP, sometimes located in a
foreign country.
Vietnam's mobile service providers
have addressed this problem by filtering calls generated from the
internet. In the case of internet calls, telephone number are displayed
on the recipient's phone with national codes.
Pham
Dinh Truong, Deputy General Director of Viettel says they have adopted
measures to prevent fraudulent calls from abroad. Viettel also launched
its Message Plus system in August after a trial period in the Central
Region./.
