For agencies, agent networks, and property managers
DataBait injects undetectable fictitious prospects into your files (prospect file, listing agreements, tenant and owner files, databases shared with your transaction and property management software, your listing portals, and your multi-posting services), each with a real email address and a mobile number, monitored 24/7. Since these prospects match no real person, any email, SMS, or call they receive reveals illegitimate use of your data and produces court-admissible proof, within 72 hours.
The cost of a data leak
Your prospect file and your listing agreements are the heart of your business, and the object of daily covetousness. A negotiator leaving with the database for a competing network, a portal or a transaction software package reusing your contacts, a cyberattack: real estate is living through one of the worst waves of data leaks in its history, exposing several million people in France. A leak here means a business asset misappropriated, GDPR exposure on tenant and owner data, and an advantage handed to your competitors.
Sources: FrenchBreaches (sector-wide tally) · GDPR art. 33 and 83
Data security
DataBait detects the actual theft of your file through its use, once it has left your information system.
Your EDR and DLP watch access and the perimeter of your information system; once the data has gone out to your transaction and property management software, your listing portals, your multi-posting services, or your surveyors, they are blind to what is done with it. The business rests on permanent sharing of prospect data (multi-portal listing distribution, delegated listing agreements, outsourced rental management), and every channel is a legitimate exit route for your data, hence just as many misappropriation surfaces beyond the reach of your perimeter tools. DataBait takes over on use: since the fictitious prospects it injects match no real contact, their only expected contacts are your own mailings and those of the senders you have declared; any other contact betrays, by construction, illegitimate use of your data. Complementing your existing setup, with no structural false positives.
Legal
DataBait provides you with court-admissible proof of the theft of your file: a commissaire de justice report, drawn up within 72 hours, sealed by a qualified eIDAS timestamp.
Each step of the procedure is sealed by a qualified eIDAS timestamp, issued by a QTSP on the EU Trusted List: contract signature, the list of fictitious prospects injected, source code of the emails and SMS received, through to the commissaire de justice report that consolidates them. Compliant with the AFNOR NF Z67-147 standard, this report is admissible before French courts.
For an agency, a network, or a property manager, this report covers both an internal and an external leak: it establishes that a prospect database left its perimeter, on what date, through which channel it was used, and with which forensic metadata. You and your counsel hold proof already assembled to characterise the facts and decide on the steps to take, whether it concerns a negotiator or agent bound by confidentiality or a portal, transaction software, or provider operating outside the scope of its DPA. Without the report, those steps remain theoretical.
Compliance
DataBait supports your GDPR compliance: the alert, sealed by a qualified eIDAS timestamp, proves your date of awareness, the certain starting point of your notification to the CNIL.
The GDPR requires you to notify a breach to the CNIL within 72 hours (article 33) and, where the risk to individuals is high, to communicate it to them (article 34). You handle prospect, tenant, and owner data, and the CNIL has published a dedicated framework for rental management that strictly governs this processing. Beyond the deadline, the leak itself is documented: in a CNIL inspection, you demonstrate what you knew, when, and what you did about it.
The GDPR (article 28) requires you to select and monitor your processors with due diligence: transaction and property management software, listing portals, multi-posting services, surveyors. DataBait turns that diligence into continuous monitoring: injecting dedicated fictitious prospects into each database entrusted to a provider turns your oversight duty into a permanent signal, with no additional audit. And because it accesses neither your listing agreements nor your transaction files, it introduces no new risk to your data itself.
Use cases
DataBait detects and proves leaks and misuse of your prospect files and listing agreements, whoever the actor.
A departing negotiator, sales agent, or tied agent walks off with the prospect file and a copy of the listing agreements, to use them in a competing network, set up their own agency, or resell them. A fictitious prospect is contacted: you are alerted, and the report grounds your action, civil and criminal alike.
A transaction or property management software vendor, a listing portal, a multi-posting service, or a surveyor leaks or reuses your file outside the DPA. Contact with a fictitious prospect reveals the misappropriation, backed by court-admissible proof, and identifies the third party if your databases are segmented.
A cyberattack hits your information system or a provider's. French real estate is living through a wave of leaks exposing several million people, published on forums and marketplaces. Your fictitious prospects surface on the dark web: you learn it from monitoring, not from your clients' complaints. You warn them of the phishing and fraudulent-canvassing risk, then notify the CNIL — before the press picks it up.
How it works
DataBait turns every attempt to misuse your files into proof.
DataBait injects undetectable fictitious prospects into your files (prospect file, listing agreements, tenant and owner files, databases shared with your transaction and property management software, your listing portals, and your multi-posting services), generated from public statistical datasets (INSEE, IRIS, BDNB), with no LLM and no hallucination, each carrying a real email address and a mobile number. DataBait accesses neither your listing agreements nor your real files.
Email address and mobile number monitored continuously; since these contacts match no real prospect and your own senders are declared, any other contact received is illegitimate by construction, with no structural false positives.
Continuous search for your fictitious prospects across forums, marketplaces, and dumps, even with no contact at all: you know a database has leaked before the CNIL, your clients, or the press.
Every signal generates proof sealed by a qualified eIDAS timestamp and triggers an alert qualified by type, enriched with OSINT and delivered with its forensic metadata, so your security lead can prioritise (email or SIEM integration).
Commissaire de justice report compliant with the AFNOR NF Z67-147 standard and a qualified eIDAS timestamp, court-admissible within 72 hours, directly usable for your GDPR notification and your claims.
Integration
DataBait is a fully managed SaaS: it runs with no agent and no change to your infrastructure, and carries no operational overhead for you; every alert is a real signal, with no false positives to triage.
Alerts reach you through the channel of your choice: email (the primary channel, precisely addressable per recipient and per listing agreement) or SIEM integration. No agent to install, no schema migration: the fictitious prospects are injected through the same import routes as your new contacts.
Protecting the agency
DataBait injects the fictitious prospects into your prospect file, your listing agreements, and your transaction software. You tool your own GDPR compliance without changing your information system, and without DataBait accessing either your listing agreements or your files.
Third-party oversight
DataBait injects fictitious prospects dedicated to each database you share with your transaction and property management software, your listing portals, your multi-posting services, and your surveyors. Segmented by recipient, these databases make it possible to identify the third party behind a misappropriation; you turn your processor-monitoring diligence (GDPR art. 28) into a continuous signal, with no annual audit.
Sovereignty
DataBait is a company incorporated under French law, 100% owned by French shareholders and operated in France on sovereign infrastructure; none of your data transits through or is stored on our servers.
The infrastructure is hosted in France on a platform qualified SecNumCloud (ANSSI) and managed by a French company certified ISO 27001, beyond the reach of extraterritorial jurisdictions. And because DataBait accesses neither your listing agreements nor your transaction files, and limits itself to the contact channel of fictitious prospects, it introduces no new risk to your data.
Trust
No promises: with every alert you receive an evidence dossier already assembled to enforceable standards.
Evidence dossier
AFNOR NF Z67-147
Commissaire de justice report, signed within 72 hours of the alert.
eIDAS · art. 41
Qualified timestamping, with a legal presumption of validity throughout the European Union.
Chain of custody
Documented, admissible before French and European courts.
SecNumCloud-qualified hosting · ISO 27001
Data hosted in France, on ANSSI-qualified infrastructure.
Listed
MARTECH PLAYBOOK 2026 · Havas Business Science
DataBait is listed in this cyber martech catalogue.
Frequently asked questions
Every database holding prospect or client data: prospect file, listing agreements, tenant and owner files, and databases shared with your transaction and property management software, your listing portals, your multi-posting services, and your surveyors. DataBait detects three families of signal:
No. DataBait accesses neither your listing agreements, nor your transaction files, nor the data of your real clients. It injects fictitious prospects, generated from public statistical datasets, and monitors only their contact channel (email, SMS). Your real data never leaves your information system, and DataBait brings no third party into the handling of your listing agreements. DataBait was designed to preserve the confidentiality of your files by construction.
The alert, sealed by a qualified eIDAS timestamp, proves your date of awareness, the certain starting point of your notification to the CNIL within 72 hours (article 33 of the GDPR) and, where the risk is high, of your communication to the individuals concerned (article 34). You handle tenant and owner data, and the CNIL has published a dedicated framework for rental management. Beyond the deadline, the leak is documented: in a CNIL inspection, you demonstrate what you knew, when, and what you did about it. DataBait also gives substance to your diligence in monitoring your processors (article 28 of the GDPR).
Yes, if you segment your databases by recipient: DataBait injects dedicated fictitious prospects into each database you entrust, and a contact received on the prospects of a given database identifies the third party concerned. On a single database shared with several providers, a contact proves the misappropriation but does not identify who did it; attribution then requires your own investigation.
None. DataBait runs as a fully managed SaaS, with zero infrastructure changes and zero operational overhead on the agency's or network's side. No agent to install, no schema migration, no connector to maintain. Deployment crosses no critical production environment: the fictitious prospects are injected through the same import routes as your new contacts.
Data hosted in France, SecNumCloud-qualified hosting (ANSSI qualification), ISO 27001. Proof produced under French law (commissaire de justice, AFNOR NF Z67-147) and recognised throughout the European Union (qualified eIDAS timestamp). No transfer outside the EU. And because DataBait accesses neither your listing agreements nor your files, deploying it adds no risk to your data.
A database under DataBait that has never triggered an alert demonstrates, by construction, the absence of detectable misuse. For you and your DPO, that is a measurable indicator of the maturity of your setup and of your providers'. It is also an exhibit you can produce in support of your diligence.
Three areas stand out, along three distinct axes of exposure:
Get in touch
Book 30 minutes with our team: we go through your prospect file, your listing agreements, and the databases you share with your portals, your transaction software, and your multi-posting services, and identify the areas where injecting fictitious prospects delivers proof fastest, without ever accessing your listing agreements.
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