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0xSec is a forum persona associated with claims of publishing databases purportedly obtained from multiple French organizations and public-facing platforms during 2026. Claimed targets include Dipeeo, a GDPR-compliance service provider; Docurba, a government urban-planning platform; Lire Demain, the institutional-sales network of publisher Auzou; and Local'Emploi, a public employment platform serving the Paris-Saclay area. The alleged datasets were represented as containing organizational and individual contact information, user-account metadata, employment and résumé references, commercial records, or urban-planning platform user data. Several offerings were distributed through an underground forum, either free or subject to a nominal access fee. The asserted compromises, data provenance, scope, access methods, and any underlying intrusion activity have not been independently verified. Available information therefore does not support attributing confirmed intrusion, exfiltration, credential theft, or other technical capabilities to 0xSec.
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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.
3 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.
Forum-based data leak activity involving the claimed publication and sale of an unverified database allegedly belonging to a French GDPR compliance provider.
Published and advertised allegedly stolen user-table data from a French government urban-planning platform, claiming broader access but releasing only selected records.
Published an allegedly leaked Lire Demain/Auzou database containing institutional client, order, invoice, mailing list, and product catalogue data for free download on a forum.
Posted and advertised an alleged leaked database of the French employment platform Local'Emploi, claiming roughly 26,900 records containing job-seeker and company contact data.
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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.