Retail & Commerce / E-commerce
An e-commerce service in the retail & commerce sector.
The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.
In July 2021, the online Indonesian watch store, Jam Tangan (AKA Machtwatch), suffered a data breach that exposed over 400k customer records which were subsequently posted to a popular hacking forum. The data included email and IP addresses, names, phone numbers, physical addresses and passwords stored as either unsalted MD5 or bcrypt hashes.
Full threat analysis, exploitation vectors, and principal guidance below.
10 additional sections · verified field analysis · defensive doctrine
435K records analyzed
Jam Tangan is an e-commerce service in the retail & commerce sector.
Jam Tangan is an e-commerce service in the retail & commerce sector. Services like this typically hold email addresses, names, IP addresses, passwords, phone numbers, physical addresses through account registration and normal operations.
The Jam Tangan dataset circulated publicly; treat as part of the standing exposure landscape.
The exposure of credentials alongside personal data heightened account-takeover and reuse risk for Jam Tangan users and drew scrutiny of its data protection.
• Credential stuffing against reused passwords across other platforms | • SIM swap attacks where phone numbers are present | • Targeted phishing campaigns using exposed email addresses | • Doxxing risk from physical address exposure
A consumer-service breach: contact and account data supports phishing, account takeover and profile enrichment. For a high-profile principal this is targeting-grade, not merely identity-theft-grade: the combination lets an adversary locate, impersonate, or pressure the principal with little additional work.
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