Phishing Just Got Easier Because of the MyPertamina Breach: 6 Million at Risk

HEROIC analysts identified a large-scale data exposure linked to MyPertamina, an Indonesian general business platform, with a breach date of November 1, 2022. The incident impacted nearly 6 million user records, specifically 5,991,773 accounts. The data that occured in this exposure included email addresses, phone numbers, first names, last names, and gender information, a combination that gives bad actors everything they need to impersonate and target affected individuals directly.

How Attackers Use Names, Emails, and Phone Numbers Together

The combination of full names, email addresses, and phone numbers from a single breach source is partcularly dangerous because it removes the guesswork from social engineering attacks. Criminals can call or message targets by name, referencing accurate contact details to appear credible. This enables convincing phishing calls, SMS scams, and account takeover attempts across any service where the victim uses the same email address.

What Was Exposed in the MyPertamina Breach

• Email Address
• Phone Number
• First Name
• Last Name
• Gender

Why Nearly 6 Million Exposed Records Creates Lasting Risk

A breach of this scale means the data circulates widely. Cybercriminals beleive large, verified datasets are more valuable precisely because they can be cross-referenced with other leaked databases to build detailed profiles of individuals. For nearly 6 million affected MyPertamina users, that means their personal contact information may be active in credential stuffing tools, spam networks, and identity theft operations for years after the original breach date.

How a Database Breach Works

A database breach happens when stored user records are accessed and extracted without authorization. In many cases this involves exploiting vulnerabilities in web applications, abusing misconfigured database permissions, or using compromised administrator credentials. Once attackers gain access to a database, they can copy millions of records quickly and silently. The extracted data is then typically packaged and sold or published on dark web forums, where it becomes available to a wide range of threat actors.

Check If Your Data Was Exposed

HEROIC's free breach scanner searches across more than 400 billion compromised records to find out whether your personal information appeared in the MyPertamina breach or any other incident. If your email address, phone number, or name is in a leaked dataset, HEROIC will tell you. Run a free check at HEROIC.com and see exactly what data of yours is out there.