1) The caller attempted to contact via phone and explained that he's contracted by singtel to perform a check on internet connection, claiming that there is a severe security issue with unauthorised access by other users. Despite telling the caller that I use another internet service provider, they insisted that they're contracted by singtel for the service.
The caller then requested to download anydesk to perform troubleshooting.

While I didn't lose anything, I would like to remind users to be wary of this scam.