Before flying abroad for a trip, many people can't help but post photos on social media to share their happiness.

However, we would like to remind everyone that if you want to post a photo of your boarding pass, you must be very careful, because it contains your personal information. Once leaked, it is very likely to be used by someone with ulterior motives for other purposes!

According to U Travel, a Hong Kong man shared a photo of his family holding boarding passes and a close-up photo of the boarding pass on social media before taking a flight to Japan, completely ignoring the fact that the boarding pass contained their complete flight information, including name, flight number, route, date and seat number.

What's worse is that he did not cover the barcode on his boarding pass!

As a result, someone suspected of using the barcode and related information maliciously modified the flight information of him and his wife on their return trip. This person moved his and his wife's seats and randomly selected their in-flight meals, changing them to "diabetic diet meals" and "kosher meals."

Fortunately, the boarding passes of the two children were not made public and their flight was not cancelled, but the couple was forced to sit separately from their two children.

However, the victim still did not know that these things had happened because of his own negligence. He even posted a message to complain about the relevant airline. He only deleted the post after learning the truth.

Afterwards, some netizens shared screenshots of his post, sparking controversy among netizens.

Some people think that although this incident was caused by the victim's negligence, he is still a victim and should be sympathized; some people think that protecting personal data and privacy is their own responsibility and there is nothing to sympathize with.

Since boarding passes contain a lot of important personal information, once leaked, it may lead to tampering of flight reservations, such as changing seats, changing meals, canceling or changing flights, and the risk of personal privacy and contact information being stolen.

Sharing happiness is not a sin, but before taking photos and checking in, be sure to carefully check whether the photos contain your personal information and protect your privacy. It is best not to post your boarding pass photo online!