Trillian 2015 Data Breach
Social Networking / Chat
Trillian 2015 Data Breach
An instant messaging application.
Confirmed · ObscureIQ Intelligence
Breach Risk Index i
14/100
Lower riskHigher risk
Lower: limited current risk based on data value and recency.
Data Sensitivity i
StandardExposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
3.8MRecords
2015Year
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.
Breach Summary
In December 2015, the instant messaging application Trillian suffered a data breach. The breach became known in July 2016 and exposed various personal data attributes including names, email addresses and passwords stored as salted MD5 hashes.
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…
3.8M records analyzed
About Trillian
Trillian is an instant messaging application.
Why They Hold Your Data
Trillian is an instant messaging application. Services like this typically hold dates of birth, email addresses, names, IP addresses, passwords, usernames through account registration and normal operations.
Recent Developments
The Trillian dataset circulated publicly; treat as part of the standing exposure landscape.
Data Points Exposed
6 verified field types
Date of Birth High
Email Address
Full Name
IP Address
Password High
Username
Breach Impact
The exposure of credentials alongside personal data heightened account-takeover and reuse risk for Trillian 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 | • Targeted phishing campaigns using exposed email addresses
Principal Risk Advisory
What this means for a principal
A social-platform breach: profile and contact-graph data supports impersonation, enrichment and social engineering. For a high-profile principal the main risk is credible impersonation and enrichment of existing exposure.
What You Should Do
- Reset any reused passwords and enable MFA on email first, then financial accounts.
- Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.
How ObscureIQ Can Help
- Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
- Exposure mapping: cross-reference the exposed identifiers against broker-available data to size and prioritize the principal's wider footprint.
- ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
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