# Credit card fraud liability in Colombia > Live situation record from CLSTR: https://clstr.news/situations/credit-card-fraud-liability-in-colombia > Updated: 2026-09-17T22:40:00.000Z. Sources: 4. Developments: 2. Research presented at the 60th Asobancaria Banking Convention identified credit cards as the primary source of fraud risk for e-commerce in Colombia, Brazil, and Mexico. The study noted that under global payment network rules, merchants often bear 100% of the financial responsibility for disputed transactions through chargebacks, a factor that can lead small and medium-sized enterprises to preemptively cancel suspicious transactions and risk rejecting legitimate customers. Following these concerns regarding liability, the Superintendencia Financiera de Colombia issued a ruling stating that banks can be held civilly and contractually liable for fraudulent credit card transactions. In a specific case involving a transaction of 6,399,000 pesos, the regulator ordered a bank to reverse the amount plus interest. The authority determined that a bank’s responsibility is not waived simply because a customer lost physical control of a card; instead, liability depends on whether the institution failed to implement required security mechanisms or failed to detect transactions that deviated significantly from a customer’s habitual spending patterns. ## Timeline ### 2026-09-17: Colombia regulator holds banks liable for credit card fraud A Colombian financial regulator ruled that banks are liable for fraudulent credit card transactions if they fail to apply proper security measures or detect unusual spending patterns. 2 sources. https://clstr.news/cluster/colombia-regulator-holds-banks-liable-for-credit-card-fraud ### 2026-08-28: Credit cards pose highest fraud risk for e-commerce in Colombia A regional study reveals that credit card transactions pose the highest fraud risk for e-commerce in Colombia, Brazil, and Mexico, forcing merchants to bear full responsibility for chargebacks. 2 sources. https://clstr.news/cluster/credit-cards-pose-highest-fraud-risk-for-e-commerce-in-colombia --- Cite as: Credit card fraud liability in Colombia. CLSTR, https://clstr.news/situations/credit-card-fraud-liability-in-colombia