Foreigners Accused of Aggravated Fraud in Turkey: Penalties, Evidence and Defense — 2026 Guide

Foreigners accused of aggravated fraud in Turkey may face serious imprisonment and judicial fines. Learn about online fraud, bank accounts, digital evidence, screenshots, IP records, criminal intent, detention, defense strategies and important 2026 procedural developments.

Aggravated fraud is one of the most serious criminal accusations a foreign national can face in Turkey, particularly where the alleged offence involves online platforms, banking systems, fake investment schemes, social media, telephone calls, cryptocurrency transactions or the use of another person’s bank account.

The consequences can include substantial imprisonment and judicial fines, seizure of phones and computers, examination of bank accounts, restrictions on assets, police custody, judicial control and, where the statutory conditions are satisfied, pre-trial detention.

However, the fact that a foreigner’s bank account, telephone number, IP address or social-media profile appears in an investigation does not automatically prove aggravated fraud.

The prosecution must establish the elements of the alleged offence and connect the accused person to the fraudulent conduct through lawful and sufficiently persuasive evidence.

This distinction is especially important in modern cyber-fraud investigations, where criminal proceeds may pass through several bank accounts and communications may involve fake profiles, stolen identities, shared devices and third-party account holders.

What Is Fraud Under Turkish Criminal Law?

The basic fraud offence is regulated under Article 157 of the Turkish Criminal Code.

In general terms, fraud involves deceptive conduct that misleads another person and causes a benefit to be obtained for the perpetrator or another person to the detriment of the victim or someone else.

Current Constitutional Court materials reproduce the statutory framework and identify the basic fraud offence under Article 157 as carrying imprisonment from one to five years together with a judicial fine.

Aggravated fraud is regulated separately under Article 158.

What Makes Fraud “Aggravated”?

Article 158 identifies circumstances in which fraud is considered more serious because of the method used, the institution involved, the victim or other characteristics of the offence.

For foreigners involved in modern online-fraud investigations, one of the most important forms concerns fraud committed through the use of information systems, banks or credit institutions as instruments of the offence.

This is particularly relevant to allegations involving:

• Online marketplaces
• Fake websites
• Social-media advertisements
• Internet banking
• Digital payment systems
• Online investment platforms
• Fake cryptocurrency opportunities
• Electronic communications linked to fraudulent payments

Current Court of Cassation decisions continue to examine convictions characterized as fraud committed through the use of information systems, banks or credit institutions.

Online Fraud Can Fall Under Aggravated Fraud Rules

Many foreigners first learn about an aggravated-fraud investigation because their bank account or telephone number has been linked to an online transaction.

For example, a victim may claim that they:

1. Saw an online advertisement.
2. Contacted a seller.
3. Communicated through WhatsApp.
4. Transferred money.
5. Never received the promised product.
6. Reported the bank account receiving the money.

Police may then identify the account holder as a suspect.

But the investigation should not stop with the name attached to the receiving account.

The central question is whether that person knowingly participated in the fraudulent scheme.

Fake Bank Employee Fraud Is Particularly Serious

Another increasingly common scenario involves offenders pretending to be employees of banks or other institutions.

In March 2026, the Istanbul Anatolian Chief Public Prosecutor’s Office publicly described an investigation in which suspects allegedly impersonated bank personnel, obtained SMS verification codes, accessed victims’ accounts and moved the funds through different accounts. Authorities reported examining victim statements, banking transactions, communications records and digital evidence together, and the suspects were prosecuted under Article 158.

This illustrates the modern evidentiary structure of aggravated-fraud investigations: prosecutors commonly combine financial, telecommunications and digital evidence rather than relying on one isolated record.

Fake Online Shopping Platforms Are Also Being Investigated in 2026

A January 2026 prosecution announcement described investigations involving fake product advertisements on social-media and second-hand sales platforms, imitation payment websites, telephone lines registered in other persons’ names and bank accounts allegedly rented to receive victim payments.

The investigations concerned aggravated fraud under Article 158 and, in the circumstances described by prosecutors, allegations involving organization for criminal purposes.

This is particularly relevant to foreigners because a telephone line or bank account registered in a foreign national’s name may appear in the evidence even where the actual user is disputed.

What Are the Penalties for Aggravated Fraud?

The precise penalty depends on the particular form of aggravated fraud alleged and the version of Article 158 applicable to the offence date.

Article 158 contains aggravated forms carrying substantial imprisonment together with judicial fines. Official Constitutional Court materials concerning the statutory framework describe aggravated fraud provisions carrying imprisonment of three to ten years and judicial fines of up to 5,000 days, while particular aggravated forms are subject to special minimum rules.

Because Article 158 contains multiple aggravated forms and has been amended over time, the exact sentencing range and mandatory minimum applicable to a defendant must be determined from:

the alleged conduct + the relevant subsection + the offence date + the statutory text applicable on that date.

A foreign suspect should therefore not assume that every Article 158 allegation carries exactly the same sentencing calculation.

Judicial Fines Can Be Substantial

Aggravated fraud may involve both imprisonment and a judicial fine.

For particular forms of Article 158, the legislation also links the minimum judicial fine to the financial benefit obtained from the offence.

This can make financial exposure significant in high-value fraud cases.

The amount allegedly obtained should therefore be determined precisely rather than relying on a complainant’s approximate calculation.

Is Using a Bank Account Enough to Prove Aggravated Fraud?

No automatic rule makes the owner of a receiving bank account guilty of aggravated fraud.

Bank ownership can be important evidence, but the prosecution should still investigate the account holder’s knowledge and conduct.

Important questions include:

• Who actually controlled the account?
• Who had the bank card?
• Who knew the password?
• Who controlled mobile banking?
• Who received authentication messages?
• Who withdrew the money?
• Where was the money transferred?
• Did the account holder receive a commission?
• Did the account holder communicate with the victim?
• Was this a single transaction or repeated activity?

These questions can determine whether the account holder was knowingly participating or whether another explanation must be investigated.

Bank Account Lending Is a Major 2026 Enforcement Issue

Foreigners should take allegations involving “account lending” particularly seriously.

In February 2026, a Chief Public Prosecutor’s Office issued a public warning that allowing third parties to use, rent or control bank accounts frequently appears in aggravated-fraud and money-laundering investigations. The warning specifically referred to offers such as allowing temporary account use in exchange for a commission.

However, a public warning that such conduct creates serious criminal risk does not eliminate the prosecution’s obligation to prove the individual defendant’s criminal responsibility in the particular case.

“I Gave My Account to a Friend” Is Not the End of the Analysis

Suppose a foreign student or employee allowed another person to use their bank account.

The prosecution may examine whether the foreigner knew or accepted that the account would be used for criminal proceeds.

Relevant evidence can include:

• Messages between the parties
• Commission payments
• Frequency of transfers
• Immediate withdrawals
• Transfers to other suspects
• ATM records
• Banking-device information
• Previous similar transactions

A defense should therefore reconstruct the complete relationship rather than relying only on the statement:

“My friend used my account.”

Receiving Fraud Proceeds Does Not Automatically Prove Contact With the Victim

This distinction is crucial.

Person A may deceive the victim.

Person B’s bank account may receive the money.

Person C may withdraw it.

Person D may convert it into cryptocurrency.

The investigation must determine each person’s individual role and state of mind.

The fact that money entered Person B’s account does not automatically prove that Person B made the fraudulent representation to the victim.

Criminal Intent Is a Central Defense Issue

Fraud is an intentional offence.

Therefore, whether the accused knew about and intentionally participated in the deceptive scheme can be critical.

A foreigner may argue, depending on the actual evidence, that:

• The account was used without authorization.
• The foreigner was also deceived.
• The payment appeared to be legitimate.
• The transfer related to a genuine transaction.
• Another person controlled the account.
• The foreigner had no contact with the complainant.

These defenses should be supported by objective evidence wherever possible.

Court of Cassation Requires Sufficient Investigation

A useful 2026 Court of Cassation decision demonstrates the importance of completing the evidentiary investigation before deciding criminal responsibility.

In a February 2026 aggravated-fraud case, the Court of Cassation overturned the judgment because additional investigation was necessary concerning the disputed cheque, including bank information, witness evidence, handwriting and signature analysis and the underlying commercial relationship.

The Court stated that the truth needed to be established without leaving room for doubt before determining the defendant’s legal position.

The broader defense lesson is important:

A fraud conviction should not replace missing investigation with assumptions.

What Evidence Is Commonly Used in Aggravated Fraud Cases?

Evidence may include:

• Victim statements
• Bank records
• Account statements
• ATM records
• CCTV
• Telephone records
• IP addresses
• WhatsApp messages
• Social-media messages
• Screenshots
• Emails
• Seized phones
• Computers
• Cryptocurrency records
• Witness statements
• Expert reports

The prosecution may combine several categories to reconstruct the alleged fraud.

Bank Records

Banking evidence is often central.

Investigators may examine:

• Incoming transfers
• Outgoing transfers
• Cash withdrawals
• ATM locations
• Card transactions
• Recipient accounts
• Transaction descriptions

The defense should reconstruct the money trail chronologically.

ATM CCTV Can Identify Who Withdrew the Money

Where money was withdrawn in cash, ATM surveillance may become highly important.

Suppose fraudulent proceeds entered a foreigner’s account but CCTV shows another individual repeatedly withdrawing the money.

That does not automatically resolve the foreigner’s legal responsibility, but it may materially affect the assessment of actual account control and the roles of the participants.

Preservation of CCTV can therefore be important.

Digital Banking Records Can Also Matter

Modern banking systems may maintain technical information concerning account access.

Depending on what records exist and are lawfully obtained, investigators may examine information relating to:

• Device use
• Login activity
• Authentication
• Transactions

This may help distinguish the nominal account holder from the actual person controlling the account.

Screenshots Are Not Automatically Conclusive

Fraud complaints frequently begin with screenshots.

A complainant may provide a screenshot showing:

• A profile photograph
• A name
• A WhatsApp conversation
• A payment instruction

But screenshots require analysis of:

• Authenticity
• Completeness
• Underlying account
• Telephone number
• Actual user
• Context

A foreigner’s photograph appearing on an online account does not by itself establish that the foreigner controlled the account.

IP Address Evidence Also Has Limits

An IP address can help connect internet activity to a technical connection.

It does not automatically identify the human being who performed the act.

Relevant issues may include:

• Dynamic IP addresses
• CGNAT
• Shared Wi-Fi
• Corporate networks
• VPN use
• Exact timestamps
• Time zones

IP evidence should therefore be considered together with device and account evidence.

Phone Seizure Can Become Critical

Police may seize a foreign suspect’s phone during an aggravated-fraud investigation.

The device may contain:

• Banking applications
• WhatsApp
• Telegram
• Emails
• Cryptocurrency applications
• Social-media accounts
• Photographs
• Contacts

The defense should examine both what the digital evidence shows and whether the relevant investigative procedures were followed.

Deleted Messages Can Sometimes Be Recovered

Deleting a message does not necessarily make it disappear permanently.

Potential copies may remain:

• On another participant’s device
• In backups
• In application databases
• On linked devices
• In other digital records

A suspect should therefore not attempt to delete communications after learning of the investigation.

Deletion may destroy exculpatory evidence as well.

Cryptocurrency Evidence

Cryptocurrency increasingly appears in aggravated-fraud investigations.

Authorities may examine:

• Exchange accounts
• Wallet addresses
• Transaction hashes
• Bank-to-exchange transfers
• Withdrawals
• Identity verification information

Blockchain transactions may establish movement between addresses, but investigators still need to establish who controlled the relevant wallet.

Wallet address ≠ automatic personal identity.

Social-Media Accounts Can Be Fake or Compromised

Fraudsters may use:

• Stolen photographs
• Fake profiles
• Compromised accounts
• Fake company pages

Where the foreign suspect denies operating the relevant account, investigators should consider provider information, devices, telephone numbers, IP records and account-security evidence.

Visual similarity alone should not substitute for technical attribution.

What If the Foreigner Was Also Defrauded?

This is possible.

A foreigner may have been persuaded to:

• Receive money
• Forward funds
• Convert money to cryptocurrency
• Allow temporary account access

The fact that the foreigner was deceived does not automatically resolve the criminal case.

But it can be highly relevant to the issue of knowledge and intent.

Evidence showing how the foreigner was recruited should be preserved.

Preserve the Complete Conversation

If another person persuaded the foreigner to use an account, preserve the entire communication.

Do not preserve only selected messages.

Relevant communications may show:

• What explanation was given
• Whether criminal activity was disclosed
• Whether payment was promised
• Whether the foreigner questioned the transactions
• What happened afterward

Context can be decisive.

Foreigners Working for Companies

Foreign directors and employees may also face aggravated-fraud allegations arising from company transactions.

The defense should distinguish:

company responsibility from individual criminal responsibility.

Evidence may need to establish:

• Who negotiated the transaction
• Who made the representation
• Who controlled the account
• Who authorized payment instructions
• Who benefited

Holding a corporate title does not automatically prove personal participation in fraud.

Commercial Dispute or Criminal Fraud?

This is another important defense issue.

Not every unpaid debt, failed investment or breached contract is necessarily criminal fraud.

A genuine commercial dispute may involve:

• Non-payment
• Late delivery
• Failed investment
• Contract termination
• Quality disputes
• Debt disagreements

Fraud requires the legally relevant deceptive conduct and criminal intent.

The investigation should determine whether fraudulent intent existed rather than automatically criminalizing every failed transaction.

Evidence Existing Before the Transaction Can Be Important

The timing of alleged deception matters.

For example, documents showing genuine preparations to perform a contract may be relevant to whether the accused intended to deceive the complainant from the beginning.

Useful evidence may include:

• Contracts
• Purchase orders
• Invoices
• Shipping documents
• Supplier correspondence
• Performance attempts

These materials may distinguish commercial failure from intentional fraud.

What If Another Suspect Accuses the Foreigner?

Co-suspects sometimes blame one another.

Statements such as:

“The foreigner organized everything.”

should be tested against objective evidence.

Relevant questions include:

• Are there messages supporting the allegation?
• Are there bank transfers?
• Did the foreigner receive money?
• Is there device evidence?
• Is there CCTV?
• Does the timeline make sense?

An accusation by another suspect should not replace independent investigation.

Can Foreigners Be Placed in Pre-Trial Detention?

Potentially, but not automatically.

Pre-trial detention requires the statutory conditions governing strong suspicion, recognized detention grounds and proportionality.

Foreign nationality alone should not be treated as automatic proof of flight risk.

The defense may present evidence concerning:

• Stable residence
• Employment
• Company activity
• Family ties
• Property
• Voluntary attendance
• Compliance with authorities

Judicial Control May Be an Alternative

Where concerns can be addressed through less restrictive measures, judicial control may become relevant.

Defense counsel should therefore address why detention is unnecessary and whether any procedural risk can be managed through less restrictive measures.

Important 2026 Procedural Change: Court Jurisdiction

A significant procedural development entered the aggravated-fraud landscape at the end of 2025 and became a live constitutional issue in 2026.

Law No. 7571 removed the reference to aggravated fraud under Article 158 from the statutory provision identifying offences assigned to heavy criminal courts. Constitutional Court records show that several criminal courts challenged this amendment in 2026, and the Constitutional Court accepted aspects of those objections for substantive examination.

As recently as 8 September 2026, the Constitutional Court was still dealing with an objection concerning this change.

Accordingly, counsel handling a new aggravated-fraud case in 2026 should verify the court with jurisdiction under the current procedural legislation and monitor the constitutional proceedings rather than relying on older assumptions about court assignment.

Does a Foreign Suspect Need to Prove Innocence?

The prosecution carries the burden of establishing criminal responsibility.

The defense does not need to accept assumptions merely because:

• The suspect owns the bank account.
• The suspect owns the telephone line.
• A profile uses the suspect’s photograph.
• An IP address points to the suspect’s internet connection.

Each evidentiary link should be examined separately.

Do Not Delete Evidence

A foreign suspect should not:

• Delete WhatsApp conversations
• Destroy the phone
• Delete emails
• Close social-media accounts to hide evidence
• Delete cryptocurrency applications
• Factory-reset devices

The same material may contain evidence proving lack of criminal intent or showing another person’s role.

Do Not Contact the Complainant Aggressively

Attempts to pressure a complainant can create additional problems.

Any legitimate communication concerning repayment, settlement or commercial resolution should be approached carefully with legal advice.

Defense Strategy: 20 Questions to Ask

A foreigner accused of aggravated fraud should have the evidence tested systematically:

1. What exact form of Article 158 is alleged?
2. What deceptive conduct is attributed personally to the foreigner?
3. Who communicated with the victim?
4. Which account received the money?
5. Who actually controlled that account?
6. Who withdrew or transferred the money?
7. Did the foreigner receive any financial benefit?
8. Is there evidence of criminal intent?
9. Are the screenshots authentic and complete?
10. Which telephone number was used?
11. Who actually controlled that number?
12. What do IP records really establish?
13. Was a VPN or shared network involved?
14. What evidence exists on the seized phone?
15. Was the digital evidence lawfully obtained?
16. Are cryptocurrency wallets reliably attributed?
17. Does CCTV identify another person?
18. Was the foreigner also deceived?
19. Is the dispute actually commercial rather than fraudulent?
20. What lawful evidence remains if disputed digital evidence is excluded?

2026 Current Legal Position

Aggravated fraud remains a serious criminal offence under Article 158 of the Turkish Criminal Code in 2026.

Online and technology-enabled cases continue to be actively investigated. Recent 2026 prosecution announcements demonstrate authorities’ focus on fake banking calls, fraudulent online marketplaces, imitation payment sites, third-party telephone lines and bank accounts used to receive alleged criminal proceeds.

At the same time, recent Court of Cassation practice confirms that criminal responsibility must be established through adequate investigation. A February 2026 decision overturned an aggravated-fraud conviction where additional examination of banking, documentary, signature and commercial evidence was necessary to establish the truth without unresolved doubt.

The defense analysis should therefore proceed through:

Deception → victim reliance → financial loss → benefit → account ownership → actual account control → digital attribution → knowledge → intent → individual participation.

A foreigner’s name appearing somewhere in the financial or digital chain is the beginning of the evidentiary analysis, not necessarily its conclusion.

Frequently Asked Questions

1. What is aggravated fraud in Turkey?

Aggravated fraud is a more serious form of fraud regulated under Article 158 of the Turkish Criminal Code. It covers specified circumstances, including particular cases involving information systems, banks or credit institutions.

2. What is the punishment for aggravated fraud?

Article 158 provides substantial imprisonment and judicial fines. The exact range and minimum rules depend on the particular aggravated form alleged and the law applicable on the offence date. Official materials describe Article 158 forms carrying imprisonment of three to ten years, with additional special minimum rules for certain categories.

3. Can a foreigner be convicted because fraud money entered their bank account?

Receipt of the money can be important evidence, but it does not automatically establish every element of aggravated fraud. Knowledge, intent, account control, communications, benefit and the suspect’s role should be investigated.

4. What if someone else used the foreigner’s bank account?

The defense should establish who actually controlled the account and document how the third person obtained access. Messages, device records, ATM footage and banking evidence may become important.

5. Can WhatsApp screenshots prove aggravated fraud?

Screenshots can be evidence, but authenticity, completeness, account attribution and context can be challenged. They should be evaluated with the rest of the evidence.

6. Can an IP address prove that the foreigner committed online fraud?

Not automatically. IP evidence identifies technical internet activity and must be interpreted together with timestamps, subscriber information, devices, network structure and other evidence.

7. Can a foreigner be arrested because of an aggravated-fraud accusation?

A foreign suspect may be apprehended or face a request for pre-trial detention where the applicable statutory conditions are satisfied. An accusation alone does not automatically require detention.

8. Is lending a bank account to another person risky?

Yes. Turkish prosecutors have specifically warned in 2026 that allowing third parties to use or rent bank accounts frequently leads to aggravated-fraud and related criminal investigations.

9. Can a contractual dispute be treated as aggravated fraud?

A complaint may be filed, but not every failed contract or unpaid commercial debt necessarily establishes fraud. The existence and timing of deceptive conduct and criminal intent must be examined.

10. What should a foreigner do after learning about an aggravated-fraud investigation?

Preserve all bank, digital and commercial evidence; do not delete communications; determine the exact Article 158 allegation; identify who controlled the relevant accounts and devices; and have the financial and digital evidence reviewed before providing speculative explanations.

Criminal Defense for Foreigners Accused of Aggravated Fraud in Turkey

Aggravated-fraud investigations can quickly expand from a single bank transfer into an extensive examination of bank accounts, mobile phones, IP addresses, screenshots, cryptocurrency wallets, social-media accounts and relationships with other suspects.

The most important defense question is not simply whether the foreigner’s name appears somewhere in that evidence.

The critical issue is whether lawful and reliable evidence proves that the foreigner knowingly and intentionally participated in the fraudulent conduct alleged by the prosecution.

Fırat Fesih Kaya Law Office provides criminal-law assistance to foreign nationals, employees, executives, investors and foreign-owned companies accused of aggravated fraud and online financial offences in Turkey.

Lawyer Fırat Fesih Kaya assists foreign clients with police and prosecutor statements, bank-account allegations, online fraud, fake investment cases, cryptocurrency investigations, WhatsApp and social-media evidence, IP records, seized phones, digital forensic evidence, account-attribution disputes, judicial-control proceedings and requests for pre-trial detention.

Early intervention can be particularly important because CCTV, banking information, account-security records, complete conversations and other potentially exculpatory evidence may need to be preserved before it becomes unavailable.

Phone: +90 312 434 22 22
Mobile: +90 532 769 22 22
Email: info@firatfesihkaya.av.tr
Address: Mevlana Boulevard No:221, Yıldırım Tower No:148, 06520 Balgat, Çankaya, Ankara, Turkey

This publication is provided for general informational purposes and does not constitute legal advice. The applicable offence, penalty, competent court, evidentiary issues and defense strategy depend on the specific form of Article 158 alleged, the offence date and the individual circumstances of the investigation.