Published: 15 April 2024
Contributors: Josh Schneider, Ian Smalley
Transaction security, also known as payment security, refers to a category of practices, protocols, tools and other security measures used during and after business transactions to protect sensitive information and ensure the safe and secure transfer of customer data.
While online transactions pose unique challenges for transaction security, they are critical for both online and offline businesses in building consumer trust, mitigating fraud and maintaining regulatory compliance.
Coinciding with the accelerated rise of e-commerce and online transactions, transaction security has become a major concern for any business that handles payments and the transfer of valuable assets, such as financial institutions, cryptocurrency exchanges and retailers. Other use cases include online gaming marketplaces, alternative payment methods like ApplePay and Venmo and any service responsible for processing sensitive legal documents (such as online tax filing services or various official government offices).
To prevent financial losses resulting from fraudulent transactions and provide a trustworthy user experience for customers and clients sharing their personal data, common transaction security measures include advanced modern data encryption, multi-factor authentication (MFA) and digital signatures. These security protocols mitigate the risk of payment fraud and customer data theft resulting from a security breach, for which many businesses might be legally liable, depending on their jurisdiction.
While most transaction security measures are put in place during the transaction itself, transaction security also extends to internal business policies that govern the treatment of any sensitive transaction data stored by an organization or business, such as credit card numbers and account numbers. For cybersecurity professionals invested in database security, transaction security means not only monitoring online transactions in real-time for suspicious activity and unauthorized transactions but also proactively identifying and mitigating any internal security vulnerabilities. Modern transaction security system service providers often incorporate a customizable notification functionality and other automation to facilitate secured transactions at scale.
The evolution of AI is changing the way we define and perform work as well as how we support the people who perform it. Find out how HR leaders are leading the way and applying AI to drive HR and talent transformation.
Subscribe to the IBM Newsletter
Threats to transaction security often intersect or contribute to broader cybersecurity threats. The following is a brief list of some of the most prevalent transaction security threats.
Phishing scams, in which cybercriminals use fraudulent messages to manipulate targets into revealing sensitive information, pose a threat to both customers and businesses. Phishing scams often target consumers in an attempt to directly steal their credit card information for use in fraudulent transactions. They can also target businesses in an attempt to steal customer payment information in bulk.
While in-person transactions typically require a physical credit card, transactions made online or over the phone often require only a credit card number. This loophole can open up online or telephone-based transactions to card-not-present fraud, in which fraudsters use stolen numbers to make fraudulent transactions. While a customer may still retain their physical credit card, they may be totally unaware that their card details have been stolen.
Another risk posed by phishing is account takeover fraud. Fraudsters may use phishing or other means to seize unauthorized access to a consumer’s banking or online shopping account and proceed to make unauthorized purchases.
BEC scams are also a common consequence of successful phishing schemes. When a cybercriminal gains access to a compromised business email account, they might impersonate an authorized employee or vendor and attempt to request a fraudulent wire transfer.
Yet another risk resulting from successful phishing attacks, SIF is a type of fraud in which scammers use a combination of real, stolen personally identifiable information (PII) to create fabricated identities for various fraudulent activities, such as payment default schemes in which a scammer purchases a product on credit or layaway with no intention of making future payments.
A well-known form of cyberattack, during a MITM attack, a hacker will surreptitiously position themselves between two parties who believe they have a private connection. The attacker may attempt to manipulate their transferred data or simply eavesdrop to steal any private payment information that may be shared.
With the continued advancement of new technologies, as well as the constantly evolving attack strategies of cybercriminals, experts are constantly working to improve transaction security through all available vectors. The following are a few of the most common methods for bolstering transaction security:
The backbone of data privacy, businesses and customers rely on data encryption to protect sensitive information during and after transactions. Commonly used encryption standards like Secure Sockets Layer (SSL) and Transport Layer Security (TLS) are frequently used during online transactions to prevent unauthorized access, tampering and theft.
Tokenization is a process that replaces sensitive customer data, like credit card numbers, with unique tokens that can neither be used to make fraudulent transactions nor reverse engineer the original payment information. These tokens are then used to reference the original payment information, which is stored in a secure token vault. Tokenization both reduces the risk associated with data breaches and simplifies regulatory compliance since the tokens themselves are useless even if they fall into the wrong hands.
As a foundational form of transaction security, authentication practices long predate the internet age. Whereas in the past a merchant might request a form of photo identification before accepting a personal check, modern digital authentication measures have increased in sophistication. Single-factor authentication (SFA) requires one form of identification, such as a password or a pin; two-factor authentication (2FA) requires additional forms of identification, such as a one-time passcode sent to a registered device or email. Other standard authentication methods include requiring a card verification value (CVV) for credit card payments and biometric authentication (such as facial recognition or fingerprint scanning).
Secure payment gateways are a crucial part in establishing strong transaction security and building and maintaining customer trust. These gateways enable transaction processing between the customer, business and payment processor or acquiring bank. Secure payment gateways often combine various transaction security techniques, including encryption, tokenization and authentication, to ensure data security.
The Payment Card Industry Data Security Standard (PCI DSS) (link resides outside ibm.com) is a set of transaction security standards developed by the Payment Card Industry Security Standard Council (PCI SSC), a global forum of payments industry stakeholders.
Developed to drive the adoption of data security standards and resources for safe payments worldwide, PCI DSS compliance helps businesses meet regulations requirements while keeping customer data safe.
To meet PCI DSS compliance, businesses must do the following:
IBM® CICS® Transaction Server, often called CICS, is a powerful, world-class mixed-language application server platform used for hosting your transactional enterprise applications in a hybrid architecture.
Use a highly secure and scalable operating system for running mission-critical applications. IBM z/OS® is an operating system (OS) for IBM Z® mainframes, suitable for continuous, high-volume operation with high security and stability. With IBM z/OS, you can drive business transformation and accelerate innovation.
Accelerate and achieve business goals with IBM Consulting®. We help you deliver purpose-built application modernization that simplifies technology management and reduces costs by embedding and operationalizing emerging technologies into your core business processes and platform strategies.
Protect your users, assets and data by managing and preventing fraud before it occurs. IBM Security® helps simplify your fraud prevention efforts and establish digital identity trust that provides frictionless, continuous authentication throughout the user journey, creating a positive user experience.
Transaction management is an integral process of database management systems (DBMS) during which transaction management software oversees, coordinates and executes any given attempted transaction.
A transaction processing system (TPS) is a type of data management information-processing software used during a business transaction to manage the collection and retrieval of both customer and business data.
Multi-factor authentication (MFA) is an identity verification method in which a user must supply at least 2 pieces of evidence, such as their password and a temporary passcode, to prove their identity.
Database security refers to the range of tools, controls and measures designed to establish and preserve database confidentiality, integrity and availability. Confidentiality is the element that’s compromised in most data breaches.
A data breach is any security incident in which unauthorized parties gain access to sensitive or confidential information, including personal data (Social Security numbers, bank account numbers, healthcare data) or corporate data (customer data records, intellectual property, financial information).
Cybersecurity refers to any technology, measure or practice for preventing cyberattacks or mitigating their impact.