Turkish Contractor Shares Confidential Commercial Information With a Competitor: What Can a Foreign Company Do? 2026 Updated Guide

A Turkish contractor discloses a foreign company’s confidential commercial information to a competitor. Learn about injunctions, damages, trade secret protection, evidence preservation, contract termination and legal remedies in Turkey.

Foreign companies operating in Turkey frequently disclose sensitive commercial information to local contractors, consultants, distributors, manufacturers, technology providers and other business partners. Problems can become particularly serious when a Turkish contractor provides that information to a competitor. Customer lists, pricing models, technical specifications, production methods, supplier information, business strategies, tender documents, software, financial projections and other confidential materials may provide an immediate competitive advantage to another business. A foreign company discovering such a disclosure should act quickly. The appropriate strategy may involve preserving electronic evidence, stopping further disclosure, enforcing confidentiality obligations, seeking interim judicial protection, terminating the commercial relationship and claiming compensation for resulting losses.

What Information Can Be Considered Confidential Commercial Information?

Whether information is legally protected depends on the circumstances. Commercially sensitive information may include customer databases, supplier lists, purchase prices, sales prices, discount structures, profit margins, business plans, market-entry strategies, product-development information, manufacturing methods, technical drawings, formulas, software-related information, tender strategies, internal reports and unpublished financial information.

The fact that a document is commercially valuable does not automatically determine every legal issue. The company should establish why the information was confidential and how it was protected.

Trade Secrets Require Particular Attention

Information that derives commercial value from remaining confidential can present significantly greater exposure when disclosed to competitors. The company should determine whether the material qualifies as a trade secret or otherwise benefits from contractual or statutory protection under Turkish law.

Is a Written NDA Necessary?

A written non-disclosure agreement provides important evidence, but the absence of a separate document titled “NDA” does not necessarily mean that disclosure is legally permissible.

Confidentiality obligations may also arise from the principal contract, supplementary agreements, the nature of the commercial relationship and applicable legal rules.

Review the Main Contract Immediately

The foreign company should examine the agreement with the Turkish contractor for clauses concerning confidentiality, trade secrets, permitted use, data security, subcontractors, intellectual property, non-solicitation, return or destruction of information, contractual penalties, termination, governing law and dispute resolution.

The exact contractual language can substantially affect the available remedies.

Determine Exactly What Was Disclosed

Avoid beginning with a general allegation that “our confidential information was stolen.” Create a detailed inventory identifying each disclosed document or category of information.

For each item, record its owner, confidentiality status, date of disclosure to the contractor, authorized purpose and evidence showing disclosure to the competitor.

Preserve Electronic Evidence Immediately

Digital evidence can disappear quickly. Relevant emails, messages, file-transfer records, cloud-access logs, download histories, shared folders and access records should be preserved.

The company should also protect original metadata where technically possible.

Do Not Alter the Original Evidence

Screenshots can be useful, but the underlying electronic evidence should also be preserved. Avoid editing, annotating or overwriting the original files.

A later dispute may concern authenticity, timing and who actually accessed the information.

Review Access Logs

If confidential information was stored in a company-controlled system, determine which contractor accounts accessed or downloaded the material.

Logs may help establish the chronology of disclosure.

Identify the Recipient Competitor

Determine whether the information was sent directly to a competitor, an employee of the competitor, an intermediary or another business connected with the competitor.

The recipient’s knowledge concerning confidentiality can become important.

Send a Preservation Notice Where Appropriate

Once litigation is reasonably anticipated, relevant parties may need to be formally instructed to preserve evidence.

The objective is to prevent deletion of emails, messages, documents or other records central to the dispute.

Can the Foreign Company Demand That Disclosure Stop?

Potentially, yes. Depending on the contractual and legal basis, the company may demand immediate cessation of disclosure and use of confidential information.

The notice should identify the disputed conduct sufficiently clearly and reserve relevant legal rights.

Demand Return or Destruction of Confidential Material

Where the contract provides for return or destruction, the company can consider requiring the contractor to return physical documents and delete unauthorized copies.

However, evidence should be preserved before deletion is demanded if those copies may be necessary to prove the violation.

Consider the Competitor Separately

The contractor and competitor may raise different legal issues. If the competitor knowingly receives or uses protected confidential information, potential remedies should be analyzed independently from the contractual claim against the contractor.

Unfair Competition Rules May Apply

Unauthorized acquisition, disclosure or exploitation of commercially confidential information can potentially raise issues under Turkish unfair competition law depending on the facts.

This can be particularly important where a competitor uses the information to obtain customers, undercut pricing, interfere with tenders or reproduce a business strategy.

Contractual Liability May Be the Primary Claim

If the contractor signed a confidentiality obligation, unauthorized disclosure can constitute breach of contract.

The foreign company may potentially seek contractual remedies including damages, contractual penalties where valid and applicable, termination or other relief provided by the agreement.

Contractual Penalty Clauses Should Be Reviewed

Many international contracts provide a predetermined penalty for confidentiality breaches.

The wording should be examined carefully to determine the triggering event, amount, relationship with additional damages and applicable Turkish-law considerations.

Can the Contract Be Terminated?

A serious confidentiality breach may potentially justify termination depending on the contract and circumstances.

Before termination, examine notice requirements, cure provisions, material-breach clauses and the consequences of termination for ongoing projects.

Immediate Termination Is Not Always the Best Commercial Strategy

If the contractor controls critical systems, equipment, data or an unfinished project, abrupt termination can create additional operational risk.

Legal strategy should therefore address both protection of confidential information and an orderly transition where necessary.

Interim Injunctions Can Be Critical

Where confidential information is still being disclosed or used, waiting for a final judgment may make the eventual remedy ineffective.

The company should evaluate whether the circumstances support urgent interim judicial measures designed to prevent further disclosure, transfer or exploitation.

Urgency Should Be Documented

For interim protection, evidence showing immediate risk can be important.

Examples may include an upcoming tender, imminent product launch, active customer solicitation or continuing transfer of files.

Preserve Evidence Before Confronting the Contractor

An immediate accusation may cause relevant communications to disappear.

Where lawful and practical, preserve accessible evidence before sending a formal breach notice.

Avoid Unlawful Evidence-Gathering Methods

A company attempting to prove misconduct should not create a separate legal problem through unauthorized access to private accounts or unlawful interception.

Evidence collection should respect applicable Turkish procedural, privacy and data-protection requirements.

Personal Data May Also Be Involved

Customer and employee databases can contain personal data in addition to confidential commercial information.

A disclosure incident may therefore create separate data-protection obligations and risks that should be analyzed independently.

Intellectual Property Rights May Also Be Relevant

If disclosed materials contain copyrighted software, drawings, designs, databases or other protected intellectual property, additional claims may arise.

Trade-secret, contractual, unfair-competition and intellectual-property claims should be evaluated together rather than in isolation.

Can the Foreign Company Claim Damages?

Potentially. The company must identify the legal basis for liability and establish the loss and causal connection.

Possible losses can include lost contracts, reduced margins, investigation expenses and other provable financial consequences depending on the circumstances.

Lost Profits Require Strong Evidence

A statement that the competitor “must have taken business from us” may be insufficient.

Preserve tender records, customer correspondence, historical margins, sales forecasts supported by actual transactions and evidence connecting the disclosure to the lost opportunity.

Pricing Information Can Cause Immediate Damage

If a competitor receives the foreign company’s confidential price structure before a tender, it may be able to submit a strategically lower bid.

Preserve the chronology carefully: when the contractor received the information, when it was disclosed, when competing bids were submitted and what happened afterward.

Customer Lists Can Be Particularly Sensitive

The value of a customer list depends on its content and confidentiality. A sophisticated database containing purchasing history, decision-makers, negotiated prices and customer-specific requirements can be very different from information publicly available online.

Technical Information Requires Expert Analysis

Where disclosed information concerns manufacturing methods, engineering specifications or technical know-how, an expert may be needed to explain why the material is commercially sensitive and how a competitor could exploit it.

The Contractor May Argue the Information Was Public

This is a common defense.

The foreign company should distinguish genuinely public information from internal compilations, pricing information, technical details and commercial intelligence that were not publicly accessible.

The Contractor May Claim Disclosure Was Authorized

Review emails, meeting notes and contractual provisions concerning permitted disclosure.

If information could be shared only with specified subcontractors or advisers, determine whether the competitor falls outside that authorization.

Confidentiality Markings Can Strengthen the Evidence

Documents marked “Confidential” or subject to access restrictions can help demonstrate the company’s treatment of the information.

However, lack of a confidentiality stamp does not automatically make sensitive information public.

Internal Security Measures Matter

Courts may consider the surrounding facts when assessing whether information was genuinely treated as confidential.

Password protection, limited-access folders, NDAs, employee policies and role-based permissions can support the company’s position.

Foreign Parent Companies Should Establish Ownership

In multinational groups, determine which entity owns the information and which entity suffered the loss.

A Turkish subsidiary should not automatically claim losses legally belonging to the foreign parent, or vice versa.

Jurisdiction Must Be Checked

International contracts frequently contain foreign-court or arbitration clauses.

Before filing proceedings in Turkey, review jurisdiction, arbitration, governing-law and interim-relief provisions carefully.

Arbitration Does Not Necessarily Eliminate Urgent Court Issues

Where the underlying dispute is subject to arbitration, the availability of interim judicial protection should still be assessed under the applicable procedural framework and arbitration agreement.

Foreign Governing Law Does Not End the Turkish Analysis

Even if the contract selects foreign law, conduct occurring in Turkey can potentially raise Turkish mandatory-law, unfair-competition, procedural or other issues.

A cross-border legal analysis may therefore be necessary.

Criminal Liability May Need Separate Assessment

In particularly serious cases involving unlawful acquisition or disclosure of trade secrets or other protected information, potential criminal-law implications may need to be considered.

A criminal complaint should not be used merely as commercial pressure. The actual statutory elements and evidence should be evaluated first.

Do Not Make Unsupported Criminal Accusations

A confidentiality dispute does not automatically amount to a criminal offense.

Contractual, civil, unfair-competition and criminal issues should be separated carefully.

Investigate Whether Disclosure Is Continuing

The first known leak may not be the only one.

Review whether the contractor still has system access, whether other employees or subcontractors received information and whether automatic cloud synchronization remains active.

Restrict Access Where Appropriate

Once evidence is preserved, consider whether contractor credentials, shared drives, API access, physical access cards or other permissions should be restricted.

Operational continuity should also be considered.

Review Other Contractors

If the incident reveals weak access controls, determine whether other contractors have unnecessary access to confidential materials.

A targeted compliance review can prevent repetition.

Notify Insurers Where Relevant

Cyber, professional liability or other insurance policies may contain notification requirements relevant to a confidentiality incident.

Late notification can create separate coverage problems.

Prepare a Damages File From the Beginning

Do not wait until litigation to calculate losses.

Maintain records of customer losses, price reductions, tender outcomes, investigation expenses and mitigation measures connected with the incident.

Mitigate Continuing Losses

The foreign company should take reasonable commercial steps to limit further harm.

This may include changing tender strategies, contacting affected customers, restricting access or replacing compromised credentials.

Consider Settlement Strategically

Some confidentiality disputes can be resolved through undertakings requiring cessation of use, deletion of copies, certification of destruction, disclosure of recipients, compensation and continuing confidentiality obligations.

Any settlement should address future use, not merely past conduct.

Require Disclosure of Further Recipients

If legally available and strategically appropriate, determine whether the contractor disclosed the information to additional companies or individuals.

The scope of dissemination can materially affect both urgency and damages.

Future Contracts Should Include Stronger Controls

International companies using Turkish contractors should consider detailed confidentiality definitions, purpose limitations, access controls, subcontractor restrictions, incident-notification duties, audit rights, return and deletion obligations, contractual penalties and dispute-resolution mechanisms.

Immediate Legal Action Plan

When a Turkish contractor shares confidential commercial information with a competitor, the foreign company should immediately preserve electronic evidence, identify exactly what was disclosed, review the NDA and principal contract, investigate the recipient and continuing disclosure, restrict unnecessary access after preserving evidence, send appropriate legal notices, assess interim judicial protection, quantify losses, evaluate unfair-competition and intellectual-property claims, review potential criminal implications where genuinely applicable and protect all contractual and procedural deadlines.

Frequently Asked Questions

Can a foreign company sue a Turkish contractor for disclosing confidential information?

Potentially, yes. Contractual liability, unfair-competition rules and other legal grounds may apply depending on the facts and contract.

Is an NDA required?

Not necessarily. A written NDA strengthens the contractual position, but confidentiality obligations may arise from other contractual provisions and applicable law.

Can the company stop the competitor from using the information?

Potentially. Depending on the evidence and legal basis, urgent interim measures and substantive claims may be considered.

Can damages be claimed?

Potentially. The claimant should establish the breach, loss and causal connection with reliable evidence.

Can lost profits be recovered?

Potentially, but speculative calculations are vulnerable to challenge. Tender records, customer communications and historical financial evidence can be important.

What if the contractor says the information was already public?

The company should demonstrate which parts were genuinely confidential and how they differed from publicly available information.

Can the contract be terminated immediately?

Possibly, depending on the seriousness of the breach and contractual provisions. Notice and termination requirements should be reviewed first.

Can disclosure amount to unfair competition?

Potentially. Unauthorized exploitation or disclosure of protected commercial information can raise unfair-competition issues depending on the circumstances.

Can there also be criminal liability?

Certain serious conduct involving protected commercial information may require criminal-law analysis, but a contractual confidentiality breach does not automatically constitute a crime.

What should the foreign company do first?

Preserve the evidence before it disappears. Identify exactly what was disclosed, who received it, when it happened and whether disclosure or use is continuing. The company can then determine whether urgent injunctive relief, contractual claims, unfair-competition remedies, damages or other proceedings are appropriate.

Client-Focused Legal Support for Confidentiality and Trade Secret Disputes in Turkey

Unauthorized disclosure of confidential commercial information can expose a foreign company to lost customers, compromised tenders, pricing disadvantages, loss of technical know-how and long-term competitive damage. Fırat Fesih Kaya Law Office assists foreign companies and international investors in Turkey with confidentiality breaches, trade-secret disputes, contractor misconduct, unfair-competition claims, evidence preservation, interim measures, contract termination and compensation proceedings.

Lawyer Fırat Fesih Kaya provides legal assistance in evaluating cross-border confidentiality agreements, preserving evidence, preparing urgent legal measures and pursuing claims against contractors or other parties involved in unauthorized disclosure.

Phone: +90 312 434 22 22

Mobile: +90 532 769 22 22

Email: info@firatfesihkaya.av.tr

Address: Mevlana Boulevard No:221, Yıldırım Tower, Office No:148, 06520 Balgat, Çankaya, Ankara, Turkey