In the Ebata household, I, as the patriarch, spend most of my waking hours staring at a PC display, while most of my family members are on their smartphones, listening to music and watching videos.

This is a typical family that is not a "nuclear family", but a "nuclear individual".

However, the living room is always noisy.

That aside.

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One day, on "LINE" application, I received a message from my second daughter.

"Dad, tell me your birth date"

I gave it to her.

"Dad, give me your credit card number"

I thought it was a little strange, but I entered the number. This is because our family has a centralized payment system for Amazon and Netflix.

"Dad, give me the security code for the credit card.

At this moment, I was convinced that I had allowed a third party to enter my LAN and that I had been maliciously spoofed.

I hurried downstairs to the living room and said to my second daughter, "Something is happening on LINE!" I said.

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Apparently, she needed to register with her parents' credit card to apply for the University Co-op, so she had inquired about it.

Ebata: "What? You have to fill in the security code on the analog form? (It's quite common in online contracts)"

Wife: "It's normal these days.

Well, it was my mistake this time, but I think that 'making inquiries without properly explaining the background' is also not good.

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I don't put my credit card number or security code in my emails, let alone on social networking sites such as LINE.

Any information pushed on the Internet is, in principle, 'someone could be watched'.

I'm sure of it. After all, I've watched them before.