Lifebear 2019 Data Breach

Lifebear Japanese Schedule App Breach (2019): 3.7 Million User Accounts Including Passwords Exposed

Platform · Productivity and personal scheduling tools · Calendar and schedule management app · Japan

Lifebear Japanese Schedule App Breach (2019): 3.7 Million User Accounts Including Passwords Exposed

Japanese schedule, productivity, and calendar app

Confirmed · ObscureIQ Intelligence
Breach Risk Index i
8/100
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.
3.7MRecords
2019Year

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
TechnologyUsers2019

Breach Summary

In early 2019, the Japanese schedule/notebook app Lifebear appeared for sale on a dark-web marketplace, exposing about 3.67 million unique email addresses along with usernames, dates of birth, and passwords stored as salted MD5 hashes.

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

9 additional sections · verified field analysis · defensive doctrine

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

3.7M records analyzed

About Lifebear

Lifebear is a Japanese calendar, diary, and notebook mobile app.

Why They Hold Your Data

Japanese calendar and productivity app built around account-based personal scheduling, reminders, and daily planning. The likely data context includes account credentials, email addresses, calendar-linked records, productivity habits, and possibly notes or schedule metadata tied to personal routines.

Data Points Exposed

3 verified field types
Email Address
Password High
Username

Breach Impact

Salted MD5 is crackable, exposing reused credentials; DOB adds profiling value.

Exploitation & Downstream Threats

• Credential stuffing against reused passwords across other platforms | • Targeted phishing campaigns using exposed email addresses

Principal Risk Advisory

What this means for a principal

A consumer-service breach: contact and account data supports phishing, account takeover and profile enrichment. 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. 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: cross-reference the exposed identifiers against broker-available data to size and prioritize the principal's wider footprint.
  3. ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).

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