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The story
Taiwan’s Bank SinoPac (永豊銀行) suffered a breach in which roughly ¥200 million was unintentionally transferred out of 418 customers’ accounts. On 5ch’s “Nandemo Jikkyo G” board, posters traded self-deprecating jokes about their own tiny balances alongside anxious comments like “it’s overseas, but this isn’t someone else’s problem.” Others offered cooler takes — “securities firms were already being targeted, why act surprised now” — while a side conversation about countermeasures spread, with suggestions like “cash is safest” or “move it into investment trusts and you’re covered.” Several argued the hack itself wasn’t the scary part — what’s really frightening is panic triggering a mass run on deposits.
Bank SinoPac hit by cyberattack — 418 customers suffer unauthorized transfers totaling about ¥200 million / Taiwan
Taiwan’s Bank SinoPac announced on the 4th that unauthorized access caused deposits to be sent out of customer accounts without authorization, affecting 418 customers.
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Source: x.com / Original post here
What people said
Seriously scary stuff.
Security's been beefed up since then.
Made me want to pull all my money out.
Cashless fans are finished.
Damn hackers, unforgivable!! (he's actually just blaming gambling losses on hackers)
We've entered a scary new world!
According to Tarako (a commentator), 'banks get robbed constantly all over the world — it just doesn't make the news.'
https://news.livedoor.com/article/detail/32733066/
My balance is ¥540 lol
There's probably a hacker out there who padded their own account, went to work like normal, and got away with it.
If you put it into investment trusts, even a sell order takes time to turn into cash, so that protects you.
That'll just make the 'dark part-time job' crooks happy. (yami-baito: gig-recruited criminals hired online for burglary/fraud jobs)
is it something people just choose not to do despite having the know-how,
or could you actually pull it off if you really wanted to?
GMO, for example, has 7,936 employees — that's a legit big corporation.
AI: 'Please don't delete me…'
Hacker: 'If I die, I'll set every fridge on earth to 50°C and trigger a global food crisis.'
Knowing my luck, I'd just find out my debt gained an extra digit.
Hackers at the front gate,
'dark part-time job' crooks at the back gate. (riffing on the proverb 'tiger at the front gate, wolf at the back' — one danger after another)
Are they stupid or something??
Way too sloppy, lmao
Apparently the victims are concentrated among people whose My Number (national ID) starts with the letter P.
It's a hack — they could just falsify the 'identity verified' flag, or simply manipulate the transfer transaction directly.
Possible, if you redistribute it from the wealthy.
Background and key points of this story
This incident occurred at Taiwan’s Bank SinoPac, where unauthorized access caused roughly ¥200 million to be unintentionally transferred out of 418 customers’ accounts. The reporting originates from Taiwanese outlets such as Focus Taiwan, and no Japanese bank was directly involved. As seen in comments noting that “securities firms were already being targeted,” Japan has seen a string of reports of unauthorized logins to brokerage accounts, and some of the distrust toward bank deposits in this thread seems to be an extension of that. It’s also worth noting that the post claiming “victims are concentrated among people whose My Number card starts with a certain letter” is not part of Bank SinoPac’s official announcement and appears to be baseless speculation. Rather than the technical details of the hack, what stood out in the thread was how many commenters focused on the risk of a panic-driven run on deposits.
*This article is compiled and summarized from the 5ch (Nandemo Jikkyo G) thread “[Breaking] Bank account deposits finally get hacked.”


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