Ajarn 2018 Data Breach

Ajarn 2018 Data Breach

Education / Education

Ajarn 2018 Data Breach

An english language teaching website.

Confirmed · ObscureIQ Intelligence
Breach Risk Index i
19/100
Lower riskHigher risk
Lower: limited current risk based on data value and recency.
Data Sensitivity i
Standard
Exposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
266KRecords
2018Year

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.

Classification Tags
Education2018

Breach Summary

In September 2021, the Thai-based English language teaching website Ajarn discovered they'd been the victim of a data breach dating back to December 2018. The breach was self-submitted to HIBP and included 266k email addresses, names, genders, phone numbers and other personal information. Hashed passwords were also impacted in the breach.

Full threat analysis, exploitation vectors, and principal guidance below.

10 additional sections · verified field analysis · defensive doctrine

Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…

266K records analyzed

About Ajarn

Ajarn is an english language teaching website.

Why They Hold Your Data

Ajarn is an english language teaching website. Services like this typically hold dates of birth, education, email addresses, names, gender, location data, job application data, nationality, passwords, phone numbers, profile photos, relationship status through account registration and normal operations.

Recent Developments

The Ajarn dataset circulated publicly; treat as part of the standing exposure landscape.

Data Points Exposed

12 verified field types
Date of Birth High
Education Information
Email Address
Full Name
Gender
Geographic location
Job Application Data
Nationality Or Citizenship
Password High
Phone Number
Profile Photo
Relationship Status

Breach Impact

The exposure of credentials alongside personal data heightened account-takeover and reuse risk for Ajarn users and drew scrutiny of its data protection.

Exploitation & Downstream Threats

• Credential stuffing against reused passwords across other platforms | • Identity verification bypass using name + date of birth combination | • SIM swap attacks where phone numbers are present | • Targeted phishing campaigns using exposed email addresses | • Doxxing risk from physical address exposure

Principal Risk Advisory

What this means for a principal

An education-sector breach: student, staff and identity records support identity theft and targeted phishing. For a high-profile principal the main risk is credible impersonation and enrichment of existing exposure.

What You Should Do

  1. Reset any reused passwords and enable MFA on email first, then financial accounts.
  2. Guard against SIM-swap and vishing: add a carrier port-out PIN and verify any 'support' calls independently.
  3. Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.

How ObscureIQ Can Help

  1. Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
  2. Exposure mapping and footprint neutralization: cross-reference against broker-available data and suppress still-removable elements, prioritizing address and phone, since this record re-seeds broker networks.
  3. ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).

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