'HACKED': Hacker defaces Seiko USA website and claims theft of 'entire customer database' here's what we know

Date:
Tue, 21 Apr 2026 18:05:00 +0000

Description:
Seiko has not yet confirmed the incident and the data has not surfaced on the dark web.

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now subscribed Your newsletter sign-up was successful Join the club Get full access to premium articles, exclusive features and a growing list of member rewards. Explore An account already exists for this email address, please log in. Subscribe to our newsletter Seiko USA website defaced; attackers claim Shopify backend breach Threat actors allege theft of full customer database, demand ransom within 72 hours No dark web leak yet; unclear if Seiko negotiated or if attackers were bluffing, company previously hit by BlackCat ransomware in 2023 Premium watch manufacturer Seiko has had its US website defaced over the weekend in an incident in which it allegedly also lost sensitive customer data.

Last weekend, the Press Lounge section of the Seiko USA website displayed a new page called HACKED. In it, the unnamed threat actors said they accessed the companys Shopify backend and pulled sensitive customer information. "This is an urgent security notification regarding your Shopify store . Your customer database has been compromised," the page allegedly said. "We have successfully breached your Shopify store's security systems and downloaded
the entire customer database." Article continues below You may like Crypto giant Kraken says it is facing extortion attack, here's what we know Marquis confirms data breach, point finger of blame at SonicWall firewall Nike investigating mega security breach as hackers claim to have stolen 1.4TB of data Demanding negotiations Without showing a sample of the stolen files, the threat actors said they obtained peoples names, email addresses, phone numbers, purchase records, transaction details, addresses, shipping preferences, account creation dates, and various customer notes.

They gave the company 72 hours to reach out and negotiate paying a ransom , otherwise the crooks would publish the stolen treasure on the dark web. They told the company to look for a specific customer account inside the Shopify admin panel (ID 8069776801871), and use the email associated with that
account to begin negotiations.

Seiko has not yet issued an official statement regarding the attack. It did restore its website, though.

Even though the weekend is already behind us, the data has not yet surfaced anywhere on the dark web. Furthermore, no threat actors claimed
responsibility for the attack. It could mean that Seiko came to an agreement with the attackers, or that the miscreants were simply bluffing and never had any data to begin with. Are you a pro? Subscribe to our newsletter Sign up to the TechRadar Pro newsletter to get all the top news, opinion, features and guidance your business needs to succeed! Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners
or sponsors By submitting your information you agree to the Terms &
Conditions and Privacy Policy and are aged 16 or over.

The company is no stranger to ransomware attacks. Back in July 2023, it was struck by the infamous BlackCat ransomware gang and lost 60,000 items of personal data from three departments - Group, Watch, and Instruments. The
data included names, phone numbers, email addresses, and postal addresses.

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Link to news story: https://www.techradar.com/pro/security/hacked-hacker-defaces-seiko-usa-website -and-claims-theft-of-entire-customer-database-heres-what-we-know


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