Alam mo ba na noon March 2016, the Philippines Commission of Elections website (COMELEC) was attacked and defaced, allegedly by Anonymous Philippines. Shortly after, data on 55 million Filipino voters was leaked publicly and included sensitive information such as genders, marital statuses, height and weight and biometric fingerprint data. The breach only included 228k email addresses.
Compromised data: Biometric data, Dates of birth, Email addresses, Family members names, Genders, Job titles, Marital statuses, Names, Passport numbers, Phone numbers, Physical addresses, Physical attributes.
note: The data is still available somewhere in the internet.
so if you are wondering why scammer know your name your phone number it is...