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Pompompurin is the online alias of Conor Brian Fitzpatrick, a U.S. cybercriminal associated with the administration of BreachForums, an English-language cybercrime forum used to trade and distribute compromised corporate data. Fitzpatrick was arrested by U.S. federal authorities in March 2023 in connection with his alleged role as the forum’s administrator. Pompompurin has been linked to the theft, sale, and public disclosure of private datasets from organizations including QuestionPro, Mangatoon, Robinhood, and ShitExpress. In the ShitExpress intrusion, Pompompurin exploited a SQL injection vulnerability to obtain and release customer order data. The actor also claimed responsibility for abuse of an FBI email system in 2021 to distribute fraudulent cybercrime-investigation messages; the FBI attributed the incident to a software misconfiguration. Pompompurin’s activity centers on unauthorized access, data exfiltration, data brokerage, and operation of cybercriminal forums.
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Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
Geographies tied to known operations.
Attributed origin per open-source reporting.
14 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Administrator of BreachForums tied to sale of hacked corporate databases, fake FBI email blasts, and infiltration of the FBI InfraGard program.
Exploited a SQL injection vulnerability in ShitExpress, dumped the customer database, and shared sample stolen data on a hacking forum. The content also describes prior data theft and sale activity involving multiple companies.
Known threat actor materially connected to the AT&T-data auction discussion through commentary explaining why ShinyHunters' forum post was removed.
Named threat actor potentially impacted by the Doxbin user database leak (credentials, MFA codes, stealer logs, chat history), which could expose operational details and enable follow-on targeting or law-enforcement attribution.
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.