Basically, this is how it works: the information is being sold to advertisers and marketers. Obviously, this could have been an insider job and the people will certainly make big bucks from companies willing to pay. I actually, for some weird reason, started to get many sms during covid here in Thailand. I sometimes think it could be the fact that I have written down my telephone number every-time I entered tesco, big c or other avenues. The information could’ve been sold to 3rd parties willing to pay.
You should immediately discard these messages. Information and data leaks are valuable these days, and this leak will certainly cause harm for many who’ll most likely be targeted with scams and perhaps threats. They can use personal info to create fake accounts as well which happens all the time. Thailand 4.0 in its best possible ways. Good luck with law enforcement because you already signed the papers that they can do anything with this information.