Shortly after returning to Singapore, I received a robocall from what appeared to be a Singaporean number. The automated voice stated, "You have a letter pending from the Immigration and Checkpoints Authority. Please select 1 for further information in English, select 2 for Mandarin."

What made this call unsettling was its timing, occurring just one day after my flight. It's highly unlikely that this timing was random. It suggests that either the airline system or an official system (such as immigration or the arrival card) used during travel has been compromised, providing real-time information to scammers.