Voice phishing has become one of the most serious crime concerns in South Korea today, with criminal organizations using sophisticated methods to deceive victims and steal their money.
These scams are often carried out through phone calls or text messages, but they may also involve individuals who are responsible for collecting and transferring the stolen funds.
These individuals are known as cash couriers, and some of them may not even understand the criminal activities in which they are involved.
Cash couriers are often recruited through online job advertisements that promise easy work. Under South Korean law, individuals who collect or transfer money connected to voice phishing schemes may face criminal charges, even if they did not fully understand the scheme.
Understanding the role of cash couriers in voice phishing crimes is particularly important for foreign residents in South Korea. This article examines how cash couriers become involved in voice phishing operations, potential legal penalties, warning signs of fraudulent jobs, and the steps individuals can take to protect themselves from becoming involved in these crimes.
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Legal Penalties for Acting as a Cash Courier in Korea
South Korean courts treat participation in voice phishing crimes seriously. A cash courier may appear to be only one small part of a larger operation, but collecting money and passing it to other members of the organization is often the step that completes the crime.
Under the 『Special Act on the Prevention of Telecommunications-Based Financial Fraud and Refund of Fraudulently Obtained Assets』, a person who commits telecommunications-based financial fraud may be sentenced to at least one year of imprisonment or a fine equal to three to five times the proceeds of the crime. A court may also impose both imprisonment and a fine. Attempted offenses are punishable as well, and penalties can be increased for habitual offenders.
Charges may also arise under the Korean Criminal Act. Fraud under Article 347 currently carries a maximum penalty of 20 years of imprisonment or a fine of up to KRW 50 million. In addition, Article 30 of the Criminal Act provides that when two or more persons jointly commit a crime, each of them shall be punished as a principal offender. As a result, if a cash courier worked together with other members of a voice phishing organization to carry out the fraud, the courier may be treated as a co-perpetrator and face the same range of penalties as those who planned or directed the scheme, even if the courier only handled the cash collection.
Courts may consider factors such as the amount of money collected, the number of victims, how many times the person participated, compensation received, previous criminal history, whether the losses were recovered, and the degree to which the individual understood the operation.
What Courts Actually Look At: Two Contrasting Cases
Whether a cash courier is convicted often comes down to one question: what did the person know, or at least suspect, at the time? Two recent cases show how differently courts can answer that question.
Case 1: Supreme Court Decision 2024Do10141 (December 12, 2024): “I thought it was a normal job” was not enough
An unidentified member of a voice phishing organization recruited the defendant to collect cash from victims. When collecting the money, the defendant handed victims documents bearing the names of a financial institution and the Governor of the Financial Supervisory Service. The defendant then deposited the cash into other people’s accounts using third parties’ resident registration numbers.
The Supreme Court held that a cash courier does not need to understand the entire scheme. It is enough that the person knew, or at least recognized the possibility, that he or she was collecting money from fraud victims. The Court pointed to several red flags:
- Voice phishing tactics have been widely publicized for years.
- The defendant was hired through an unusual process to handle large sums of cash.
- The methods of transferring the money and receiving payment differed from ordinary business practice.
- The documents given to victims were crude and unrelated to the job the defendant claimed to be doing.
- The defendant kept working even after there was reason to suspect something was wrong.
Case 2: Supreme Court Decision 2024Do9087 (July 31, 2024): acquittal upheld for a teenager who believed she was an office assistant
The defendant was 18 years old when she applied for a part-time candle-packaging job she found in an online posting. The next day, a man claiming to be the employer contacted her and offered her office assistant work at a “financial planning company”. Through a Telegram chat room, she was told that her job was to receive money from the company’s clients. She was also told to deposit the money in installments of KRW 1 million each. Over seven collections, she gathered a total of KRW 104.5 million from victims and was paid roughly KRW 130,000 per day. Prosecutors charged her with fraud but the appellate court acquitted her, and the Supreme Court affirmed. The courts found that the prosecution had not proven beyond a reasonable doubt that she knew she was part of a voice phishing scheme. They gave four reasons:
- Her age and inexperience. As an 18-year-old with no work experience, she could reasonably have believed she was doing ordinary clerical work for a financial planning firm.
- Reasonable pay. Given the irregular hours, long-distance travel, and risk of carrying cash, her daily pay was not unusually high compared with minimum-wage work at the time.
- The type of awareness required. To be guilty of fraud, a person must be aware that the victims are handing over money because they have been deceived. A suspicion that the work was “somehow improper” is not the same as awareness of fraud.
- Limited public awareness of this method. Most people understand voice phishing as a phone scam that persuades victims to wire money. Fewer people know that couriers are used to collect cash in person and deposit it in small amounts.
What These Cases Mean for You
- Courts judge what you knew by what you did, not by what you say later. In both cases, the outcome turned on objective facts: how the person was recruited, what documents were used, whether identities were concealed, and what the messages showed. Simply saying “I did not know” carries little weight on its own.
- Suspicion can be enough for criminal liability. Under Korean law, a person can be convicted if he or she recognized the possibility of fraud and went ahead anyway. Once something feels wrong, continuing the work can be treated as accepting that risk. Warning signs include crude documents, being asked to use someone else’s name, or unusual payment arrangements.
- Your personal circumstances matter. Courts consider who you are and what you could reasonably have understood. Your age, work experience, how you were recruited, and whether the pay made sense for the work all count. The same conduct can be judged very differently depending on these factors.
- Acting openly and stopping early can make a real difference. The facts that supported acquittal were ordinary ones: using your own name, keeping your conversations, and having a clear, innocent reason for what you were doing.
Why “Delivery Jobs” Can Be a Trap for Voice Phishing
Recruiters may advertise positions as simple cash-handling jobs and describe the work as helping a company, debt collection agency, courier service, or private business. These jobs can be particularly attractive because they often promise quick payment, flexible hours, and little or no prior experience. Communication may take place entirely through messaging applications, and the recruiter may never meet the worker in person. By the time the worker realizes something is wrong, he or she may already have collected money from a fraud victim.
Common warning signs can include:
- Being asked to collect large amounts of cash directly from individuals
- Receiving unusually high payment for a simple delivery or collection
- Being instructed to hand over money immediately after receiving it
- Being told to use another person’s name, identification, account, or company information
- Being asked to communicate only through encrypted or anonymous messages
- Receiving instructions to avoid discussing the job with other people
- Being given a false explanation to use when meeting the person providing the money
- Being asked to change meeting locations frequently or deliver cash to different people
- Being recruited without clear information about the employer
If a job involves collecting or transferring cash and the circumstances feel unusual, it is safer to stop before accepting any money. Verifying the employer, asking for a written employment contract, and checking the company’s contact information can help prevent becoming involved in a voice phishing crime.
How to Protect Yourself From Becoming Involved
Because voice phishing organizations disguise criminal activity as ordinary employment, the best protection is to examine any job that involves handling money on behalf of another person.
Verify the Employer Before Accepting the Job
Before agreeing to any work, confirm that the employer is legitimate. Check the company’s official website, business information, address, and contact details. If the recruiter refuses to identify the company or communicates only through private messaging, this should be considered a warning sign.
Be Suspicious of Jobs Involving Cash Collection
Be especially cautious if the job requires you to receive cash from strangers. Ask why an ordinary bank transfer or established payment system cannot be used.
You should be particularly careful if you are instructed to:
- Collect large amounts of cash from individuals
- Immediately deliver the money
- Deposit money into different bank accounts
- Use a false name or explanation when collecting the money
- Avoid speaking with bank employees or police
- Delete messages or records after completing a transaction
These types of instructions can indicate that the person recruiting you is attempting to conceal the movement of money.
Do Not Ignore Unusual Instructions
A recruiter may try to reassure you that unusual procedures are necessary for security. However, legitimate businesses generally do not require employees to misrepresent their identity or provide false explanations about transactions. Stop and verify the situation independently rather than relying solely on what the recruiter tells you.
Keep Records of Your Communications
If you become suspicious, keep copies of messages, job advertisements, phone numbers, payment records, and instructions. Do not automatically delete conversations just because you are instructed to. These records may later help demonstrate how you were recruited and what information you were given.
Stop Immediately If You Suspect Voice Phishing
If you realize that you may have collected or transferred money connected to voice phishing, do not continue carrying out additional instructions. Instead, contact the police and obtain legal advice as soon as possible. Early action can be important, because investigators may need to determine what you knew at the time and whether any of the victim’s money can still be recovered.
If You Are Already Involved in an Investigation
If you have already collected money and later discover that the work may have been connected to voice phishing, it is important to stop participating immediately. Preserve any job advertisements, messages, phone numbers, bank records, payment details, or instructions you received. In cash courier cases, the question of what the individual knew about the scheme can be very important.
You should also consider speaking with a criminal defense lawyer as early as possible. Under Korean criminal procedure, a suspect may have defense counsel participate during police questioning, subject to the applicable procedural rules. A lawyer can help you understand the allegations, organize relevant evidence, and advise you before or during questioning.
Even if you genuinely believed that you were performing legitimate work, you should not assume that the matter will resolve itself. Obtaining legal advice early can help ensure that your innocence is properly explained and supported by available evidence.
Conclusion
Cash couriers play an important role in many voice phishing schemes, but not everyone who becomes involved understands the nature of the work. Because these crimes often rely on misleading job advertisements, individuals may find themselves facing a criminal investigation after what appeared to be a simple job. Understanding the warning signs can greatly reduce the risk of becoming involved.
At the same time, anyone who is already under investigation for acting as a cash courier should take the situation seriously. If you or someone you know has been accused of involvement in a voice phishing scheme, contact Seoul Law Group to discuss the circumstances of the case and arrange a consultation.