I posted response to a thread but not seeing it now.

If you have ever used the Thaipass system, I strongly recommend changing all your passwords for anything you find useful, (facebook, transferwise, any banking systems, other government website, etc).

Though its not clear to me what happened, hackers comprised Thaipass system or some hackers spoofed a related site and got my e.mail address (not likely), Hackers definitely got Thaipass user's e.mail addresses and some personal information (the fact you plan to travel to Thailand). This is enough to craft a campaign to entice you to give the rest of your personal information.

Additionally, if hackers have your e.mail address (anybody who used Thaipass) they possible have your passwords already.

Finally, changing your password is always a good idea.