Data Breaches in 2011

17 data breaches were reported in 2011. This historical archive captures the complete breach landscape for the year, including incidents that may have been disclosed months after they occurred.

Reviewing historical breach data helps identify long-term trends in cybercriminal tactics, measure the effectiveness of security investments over time, and provide context for current threat assessments. Many compliance frameworks require historical breach analysis for risk evaluation.

The 2011 data includes breaches across all industries and geographies. Filter by industry to see sector-specific incidents, by country for regional analysis, or by incident type to focus on specific attack methods. For the most recent activity, visit the latest breaches page.

Full year archive: Complete dataset for 2011. Data is final and includes late-reported incidents.
Browse all breaches by year, industry, country, or type
17
Breaches in 2011
~1
Per Month Average
Date Company Type Industry Country Severity Source
Dec 28, 2011 17173 unauthorized access - - 8/10 View
Dec 26, 2011 Tianya unauthorized access - - 8/10 View
Dec 24, 2011 Stratfor insider - - 7/10 View
Dec 21, 2011 Zhenai.com unauthorized access - - 8/10 View
Dec 21, 2011 China Software Developer Network unauthorized access - - 8/10 View
Dec 21, 2011 hemmelig.com unauthorized access - - 6/10 View
Dec 1, 2011 Dodonew.com unauthorized access - - 7/10 View
Oct 30, 2011 Android Forums unauthorized access - - 7/10 View
Jul 10, 2011 Civil Online unauthorized access - - 8/10 View
Jun 26, 2011 Battlefield Heroes unauthorized access - - 7/10 View
Jun 25, 2011 hackforums.net web app exploit - - 7/10 View
Jun 2, 2011 Sony web app exploit - - 6/10 View
Jun 1, 2011 QIP unauthorized access - - 9/10 View
Jun 1, 2011 Dangdang web app exploit - - 7/10 View
Mar 10, 2011 Fling unauthorized access - - 9/10 View
Jan 1, 2011 Duowan.com unauthorized access - - 8/10 View
Jan 1, 2011 7k7k unauthorized access - - 8/10 View

Showing 17 of 17 breaches

Unlock Full Breach Intelligence

Get complete access to our breach database with advanced search, API integration, threat actor attribution, and real-time monitoring for your security operations.

Full historical archive API access Real-time alerts Threat actor data Export to CSV/JSON

Contact access@breachsignal.com for enterprise pricing.