The hacker used the same method to make changes on the three DNSs, causing the site-owners problems, halting services and leaving customers frustrated. Fortunately InterNic had sent an e-mail to warn the Web administrator that there had been an attempt to hack its DNS server, helping the Web administrator to take security precautions to prevent the site from being hacked. Poramate said the hacker might do the same to other sites, which would not be a good thing for Thai Internet society. Since there are unethical computer-operators around, all Web administrators should be concerned about their security systems and plug any loopholes that allow these people to hack, Poramate said. First of all, to make communication secure, every e-mail should be encrypted to protect unauthorised people from opening it.
Encryption software is necessary.
The software is based on public key technology which allows only the authorised recipient, who has a key to open the mail, to access it. Normally site owners use the basic service, known as Default Plan, which allows Web administrators who want to make any DNS changes to get confirmation of the change through conventional e-mail. The Guardian Plan will provide more security, Poramate added. Every time Web administrators want to make changes on their DNSs, they require a set of passwords to get authorisation. This is one of the protection screens which make the sites more difficult to hack.