Wednesday, November 4, 2026Nov 4RSSby nabulinesFollow @nabu_lines
Hacks

MUJI leak may include about 1.09 million full card numbers

About 345,000 of the card numbers are said to still be valid, per Polymarket Japan.

Polymarket Japan@polymarketjapan on X
3.7kHacks
MUJI leak may include about 1.09 million full card numbers (Security & hacks)
@polymarketjapan · Security & hacks

Polymarket Japan (@polymarketjapan) reports that MUJI may have leaked full card numbers for about 1.09 million MUJI card members.

About 345,000 of those numbers are said to still be valid. Names, addresses and phone numbers for about 520,000 people may also be affected. Expiry dates and security codes were not included, according to the post.

The post drew about 2,200 likes. MUJI's own second notice on the incident was posted the same morning.

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