CrackingForum 2016 Data Breach
ObscureIQ Breach Intelligence
Moderate SeverityWebsite / service breach
CrackingForum Credential Cracking Forum Breach (2016): 469K Member Accounts Exposed
Online forum focused on credential cracking and cybercrime techniques.
Verified by ObscureIQ Intelligence
56/100Breach Risk Index
25Data Value
25Market Recency
453dSince Breach
Breach Intelligence Summary
Entity: CrackingForum · Actor: Unknown · Sources: 8 references
Attack: Misconfiguration
Profile: Threat Actor Infrastructure · Cybercrime discussion and cracking community · Cracking forum · Global
Timeline: Breach (2016-07-01) · Indexed (Jan 29, 2025) · Year (2016)
Exposure: 469K records · 4 fields: Email Address, IP Address, Password, Username
Status: Confirmed
Executive Summary
CrackingForum, a vBulletin-based cybercrime forum dedicated to credential cracking and account-compromise operations, suffered a data breach in approximately mid-2016 with the breach data subsequently indexed by Have I Been Pwned on December 10, 2017. The breach data was extracted from the forum's vBulletin database and circulated within breach-trading communities. DataBreach.com subsequently indexed the dataset on January 29, 2025 as part of a broader threat-actor-infrastructure indexing initiative. The breach affected approximately 469,451 unique customer email addresses based on the deduplicated records indexed by DataBreach.com (with Have I Been Pwned reporting approximately 660,305 records for the same incident, with the difference reflecting deduplication and reprocessing of the breach data). Compromised fields included email addresses, IP addresses, usernames, and passwords stored as salted MD5 hashes. The salted MD5 hashing represents a deprecated cryptographic algorithm vulnerable to brute-force cracking, making the password values practically recoverable for many users despite the salting. For individuals whose email addresses appear in the CrackingForum dataset, the practical risk profile is severe and bifurcated. For users who actively participated in credential-cracking activity through CrackingForum, the breach exposed their identification as participants in a forum dedicated to credential-cracking operations against other online services, with substantial criminal-prosecution risk under U.S. federal Computer Fraud and Abuse Act statutes (and equivalent statutes in other jurisdictions). The breach data may be used by law enforcement to cross-reference pseudonymous identities across multiple cybercrime forums and to map participation patterns. The salted MD5 hashing means original passwords are recoverable through brute-force cracking for many users. Affected users should change any reused passwords on other accounts because the password exposure means any account where the same password was reused is potentially compromised. Users whose IP address data may have included real (non-VPN) addresses are at elevated identification risk. The U.S. Computer Fraud and Abuse Act and equivalent statutes in other jurisdictions may apply to CrackingForum members whose forum activity constituted unauthorized account access.
ObscureIQ assessment: Exposure enables criminal-network mapping, blackmail, retaliation, and law-enforcement targeting. Forum records can also identify actors involved in cracking and credential-trade ecosystems.
Breach Impact
The institutional impact on CrackingForum has been moderate based on publicly available information. Civil and regulatory action against the forum operator has been limited based on publicly available information. The case has been cited primarily as an example of the recurring vulnerability of vBulletin-based forum infrastructure to compromise during 2015-2017, when an extended series of vBulletin vulnerabilities and unpatched installations created a substantial victim population including legitimate forums and cybercrime forums alike. The reputational impact has concentrated within the cracking community and cybercrime forum ecosystem.
About CrackingForum
CrackingForum was an online cybercrime forum operated at the crackingforum.com domain dedicated to discussion and trade of credential cracking, brute-force attack tools, account-compromise techniques, and related cybercrime topics. The forum operated on the vBulletin forum software platform and existed as part of the broader 'cracking community' that focuses on automated credential testing and account takeover operations rather than the network intrusion and exploitation focus of more traditional hacking forums. As cybercrime forum infrastructure, CrackingForum maintained user accounts and discussion records that documented members' participation in credential-cracking operations, including credential-stuffing attacks against other online services. The forum's content directly facilitated activity that violates U.S. and international computer fraud statutes.
Why They Hold Your Data
Cracking forums collect user accounts, messages, trade histories, service listings, and discussion records tied to credential abuse and illicit access communities.
Recent Developments
CrackingForum has since been retired or shut down based on publicly available information, with the crackingforum.com domain no longer hosting active forum content. The forum did not make any public acknowledgment of the 2016 breach. The breach was indexed by Have I Been Pwned on December 10, 2017 with a breach-date of July 1, 2016, and DataBreach.com indexed the dataset on January 29, 2025 as part of a broader threat-actor-infrastructure indexing initiative. The case sits within the broader pattern of vBulletin-based cybercrime forum compromises during 2016-2017 that included CrimeAgency's coordinated compromise of approximately 140 vBulletin forums in January 2016 (a separate large-scale campaign against unpatched vBulletin installations).
Data Points Exposed
4 verified field types
Email Address
IP Address
Password Critical
Username
Field names are shown in full for clarity and search visibility. Canonical machine keys are emitted only in this page’s structured data.
Exploitation & Downstream Threats
Threat Activity:High
Primary downstream threats:
- Credential stuffing against reused passwords across other platforms
- Targeted phishing campaigns using exposed email addresses
Threat vectors:
- Phishing, credential stuffing & account takeover
- Geolocation & account flagging
- Credential stuffing & account takeover
- Cross-platform tracking & credential stuffing
Recommended Actions
If you believe your information may be included:
Change Reused Passwords
Update this account and anywhere you reused the password; use a manager.
Enable MFA Everywhere
Turn on multi-factor authentication on email first, then financial accounts.
Report & Recover
If you spot misuse, start an official recovery plan and report fraud.
Frequently Asked Questions
What happened in the CrackingForum breach?▾
CrackingForum, a vBulletin-based cybercrime forum dedicated to credential cracking and account-compromise operations, suffered a data breach in approximately mid-2016 with the breach data subsequently indexed by Have I Been Pwned on December 10, 2017. The breach data was extracted from the forum's…
What data was exposed?▾
Verified fields include Email Address, IP Address, Password, Username.
What should I do if I was affected?▾
Change reused passwords, enable MFA, and (if identity or financial data is involved) freeze your credit and monitor your accounts.
Sources & References
Every claim on this page is traceable. This breach draws on:
Breach Index
Breach Index
Cross-source
9ghz
Cross-source
BreachForums_Official_Index
Cross-source
DataViper.io
Cross-source
Keeper
Cross-source
leakfind
ObscureIQ Intelligence
ObscureIQ proprietary analysis
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