News and Updates on Information Technology

Japan – Mercari

Exploit: Supply Chain Data Breach

Mercari: E-commerce Platform

cybersecurity news represented by agauge showing severe risk

Risk to Business: 1.922 = Severe

In another big supply chain hit this week, Japanese marketplace Mercari has been compromised as a result of the recent Codecov breach. earlier this year, code coverage tool Codecov disclosed that it had been a victim of a supply-chain attack that lasted for two months and allowed cybercriminals to meddle with its popular Bash Uploader, opening hundreds of companies up to risk. Mercari announced that tens of thousands of customer records, including financial information, were exposed to external actors due to the Codecov breach.

cybersecurity news represented by agauge showing severe risk

Individual Risk: 1.942 = Severe

In the final tally, 17,085 records related to the transfer of sales proceeds to customer accounts were exposed including bank code, branch code, account number, account holder (kana) and transfer amount; 7,966 records on business partners of “Mercari” and “Merpay,” including names, date of birth, affiliation, e-mail address, and other data were exposed. 2,615 records on employees were also impacted including those working for a Mercari subsidiary. The data is comprised of names of some employees as of April 2021, company email address, employee ID, telephone number, date of birth and other PII plus details of past employees, some contractors and employees of external companies who interacted with Mercari.

Customers Impacted: Unknown

How it Could Affect Your Customers’ Business: Third-party data breaches like this one are the future of business. Reliance on outsourced service providers gives cybercriminals an easy way to scoop up data or snatch access credentials for multiple targets in one fell swoop.