Capital Markets Act Violations in Korea: Why Legal Counsel Is Essential From the Very First Investigation
Following the expansion of the FSS Special Judicial Police's independent investigative authority in 2026, an FSS inquiry is now effectively the start of a criminal investigation. In Capital Markets Act cases, unlike ordinary criminal matters, statements made and documents submitted at the earliest stage become direct evidence at trial.
What Constitutes a Capital Markets Act Violation?
It is easy to assume that a losing trade was simply bad luck. But the legal standards applied to capital markets conduct are highly precise. The most common categories of violation include the following.
• Use of material non-public information (insider trading): trading on information obtained through one's professional role before it is publicly disclosed.
• Market manipulation: artificially distorting share prices through coordinated trading activity — what is commonly referred to as a "stock operation."
• Fraudulent transactions and false disclosure: deceiving investors by misrepresenting or omitting material information.
• Unlicensed operations: conducting investment brokerage, investment advisory, or fund-related activities without the required authorization.
These cases typically move from FSS investigation to prosecution, and are treated as serious criminal offenses that can result in pre-trial detention, custodial sentences, and significant disgorgement orders.
Why a Capital Markets Act Defense Lawyer Is Necessary
Capital Markets Act cases cannot be handled on the basis of general criminal law knowledge alone. They require a thorough understanding of equities, derivatives, and fund structures, as well as the ability to interpret financial data — including trading records from HTS and MTS platforms, order book and execution patterns, and account flow analysis.
Investigators focus not on outcomes but on trading intent and market impact. Rebutting those assessments requires a strategy grounded in a genuine understanding of securities market practice.
A single statement made in an early interview can become a central piece of evidence at trial. Deciding what to say, what documents to produce, and which points to defend requires strategic design from the very beginning — and that is precisely what a specialist lawyer must provide.
A Stage-by-Stage Defense Strategy
• Stage 1: FSS and Exchange Investigation
At this stage, investigators request a broad range of materials including account records, call logs, and messaging history. How the direction of responses is set here determines the position taken in any subsequent prosecution.
• Stage 2: Prosecution
Based on the materials gathered, prosecutors assess whether a specific legal violation occurred. The central questions are whether the conduct constituted ordinary investment activity, market manipulation, or insider trading.
• Stage 3: Trial
At trial, trading pattern analysis, expert opinion evidence, and the adequacy of internal compliance systems all become relevant in contesting criminal intent and the scope of liability.
All three stages are part of a single connected process. A consistent strategy from beginning to end is essential.
How to Evaluate a Capital Markets Act Defense Lawyer
Selecting a lawyer based solely on general criminal defense experience is a significant risk in Capital Markets Act cases. It is important to confirm whether the lawyer has direct experience handling insider trading, market manipulation, and false disclosure cases, and whether they have been involved in shaping strategy from the FSS investigation stage onward.
Experience interpreting financial and accounting data, familiarity with corporate governance and internal decision-making structures, and the ability to manage competing interests among co-respondents are all relevant factors.
Capital Markets Act cases affect not only the outcome of the criminal proceedings but also the scale of any disgorgement order, eligibility to work in the financial industry, and long-term career prospects. The choice of lawyer has direct consequences for all of these.
If you have received notice of an FSS investigation or a request to appear before prosecutors, drafting a statement unilaterally or aligning positions internally without legal advice is not the right approach. The first step is to organize the facts and underlying materials, and then develop a strategy with experienced counsel.
Decent Law Firm's defense team — with extensive practical experience in financial and capital markets matters — reviews each case directly. We provide a consistent and carefully considered defense strategy from the FSS investigation stage through to trial, protecting our clients' assets and rights throughout.
The assumption that "it surely won't go as far as criminal charges" is often the most dangerous one. If you are concerned about a potential Capital Markets Act issue, we encourage you to seek advice before it is too late — and to get an accurate assessment of your situation and the options available to you.
