SunStar PLDT shuts down over 3K domains with links to online child abuse SAFE INTERNET. With more children glued to the internet for online learning, the PLDT Group is advocating safe internet by blocking online materials that have inappropriate content. (SunStar file) + February 08, 2021 TO CONTINUE combating online child exploitation, telecommunication company PLDT and its wireless subsidiary Smart Communications Inc. (Smart), have strengthened their capabilities to block materials and domains linked to online child abuse. With children spending more time on the web due to online learning, the PLDT Group, through its Cyber Security Operations Group, shut down 3,020 domains linked to online child abuse.