Payment Security Protocols

𝗣𝗖𝗜-𝗗𝗦𝗦 𝗘𝘅𝗽𝗹𝗮𝗶𝗻𝗲𝗱 Every time we tap a card, save a card online, or enter card details on a payment page… there’s a hidden layer silently protecting that transaction. 👉 PCI-DSS. Most people in payments hear the term often. But very few understand: • why it exists • what problem it solves • and how deeply it impacts real payment systems 𝗪𝗵𝗮𝘁 𝗶𝘀 𝗣𝗖𝗜-𝗗𝗦𝗦? PCI-DSS stands for: 👉 Payment Card Industry Data Security Standard It is a global security standard created by major card networks to protect cardholder data. It applies to: • merchants • payment gateways • processors • banks • fintech platforms • anyone storing, processing, or transmitting card data 𝗪𝗵𝘆 𝗣𝗖𝗜-𝗗𝗦𝗦 𝗲𝘅𝗶𝘀𝘁𝘀 Imagine if businesses stored: • full card numbers • CVV • track data • PIN information without strong security controls. One data breach could expose millions of payment cards. PCI-DSS exists to reduce that risk. 𝗢𝗻𝗲 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 𝗿𝘂𝗹𝗲 𝗺𝗮𝗻𝘆 𝗽𝗲𝗼𝗽𝗹𝗲 𝗱𝗼𝗻’𝘁 𝗸𝗻𝗼𝘄 👉 CVV must NEVER be stored after authorization. Even if encrypted. This surprises many people in the industry. 𝗣𝗖𝗜-𝗗𝗦𝗦 𝗶𝘀 𝗻𝗼𝘁 𝗷𝘂𝘀𝘁 “𝗛𝗧𝗧𝗣𝗦” It affects: • APIs • backend systems • databases • logs • employee access • network architecture • monitoring & audit trails In real production systems, PCI changes how payment infrastructure is designed. 𝗣𝗖𝗜-𝗗𝗦𝗦 𝗲𝘃𝗼𝗹𝘂𝘁𝗶𝗼𝗻 (𝗺𝗮𝗷𝗼𝗿 𝘃𝗲𝗿𝘀𝗶𝗼𝗻𝘀) The infographic also covers how PCI-DSS evolved over time: • PCI DSS 1.0 (2004) • PCI DSS 2.0 • PCI DSS 3.x • PCI DSS 4.0 • PCI DSS 4.0.1 (2024) 👉 showing how payment security evolved with modern threats, cloud systems, APIs, tokenization, and digital payments. 𝗪𝗵𝘆 𝘁𝗼𝗸𝗲𝗻𝗶𝘇𝗮𝘁𝗶𝗼𝗻 𝗯𝗲𝗰𝗮𝗺𝗲 𝘀𝗼 𝗶𝗺𝗽𝗼𝗿𝘁𝗮𝗻𝘁 Because businesses wanted to reduce PCI exposure. Instead of storing real PAN: 👉 systems store tokens. That became one of the biggest shifts in modern payment security. Payments feel simple on the surface. But underneath, security, compliance, encryption, tokenization, monitoring, and risk controls are constantly working together. 📌 Refer to the infographic for the complete breakdown. 👍 Like if this helped 🔁 Reshare to help others learn payments 💬 Share your experience or questions #FinTech #Payments #PCIDSS #PCI #PaymentSecurity #CyberSecurity #PaymentArchitecture #DigitalPayments #CardPayments #Tokenization #Encryption #FraudPrevention #RiskManagement #PaymentGateway #PaymentProcessing #CardData #DataSecurity #PaymentSystems #Visa #Mastercard #RuPay #AmericanExpress #Amex #Discover #JCB #DinersClub #UnionPay #UPI #NPCI #MerchantPayments #BankingTechnology #InformationSecurity #ProductManagement #PaymentsEcosystem #EmbeddedFinance #FintechIndia

In the first half of 2024, £571 million was lost to card payment fraud in the UK alone, much of it driven by scams on social media. Fraud has clearly evolved, adopting more modern and sophisticated tactics. In payment, one standard governing how card data is protected, namely how it is stored, processed, and transmitted, is the PCI DSS directives. The Payment Card Industry Data Security Standard was created in 2004 and has been the backbone of payment security for nearly 20 years. This year marks a big shift. Its latest version, PCI DSS v4.0, will become mandatory in March 2025. This is the first major update in over a decade, so worth taking a closer look at the key changes. Overall, PCI DSS v4.0 focuses on critical aspects such as encryption, authentication, network segmentation, and vulnerability testing, ensuring businesses are better equipped to handle the 'modern' security threats that are increasingly sophisticated too. ◾As such one of the key changes is the introduction of a flexible compliance approach. This means merchants can choose security measures that best fit their specific needs and risks. This approach is well-aligned with how businesses today manage their security challenges. In the same way that authentication frameworks are becoming more adaptive to varying levels of risk, other security measures are also evolving to be more context-specific and scalable. ◾Another key update focuses on the Stronger Authentication framework. Multi-factor authentication (MFA) is now mandatory for all accounts accessing sensitive payment systems, including remote administrative access. Specifically, MFA is required for all accounts that interact with the Cardholder Data Environment (CDE). ◾Stronger encryption and better key management are now essential. Businesses must use modern encryption methods instead of outdated ones. They also need to improve how encryption keys are created, shared, and stored to reduce the risk of data breaches and unauthorised access. ◾Given the industry’s shift towards real-time data processing, the latest guidelines also encourage automated monitoring and the use of tools that enable businesses to detect and flag non-compliance in real time. 👉🏽#Paymentexperts any perspectives to share on #pcidss🎙️? --- 𝑾𝒐𝒏𝒅𝒆𝒓 𝒘𝒉𝒐 𝒘𝒆 𝒂𝒓𝒆? 𝑊𝑒 𝑎𝑟𝑒 𝑎 𝑡𝑒𝑎𝑚 𝑜𝑓 𝑃𝑎𝑦𝑚𝑒𝑛𝑡𝑠 𝑆𝑡𝑟𝑎𝑡𝑒𝑔𝑖𝑠𝑡𝑠, 𝑏𝑙𝑒𝑛𝑑𝑖𝑛𝑔 𝑐𝑜𝑟𝑒 𝑡𝑒𝑐ℎ𝑛𝑖𝑐𝑎𝑙, 𝑜𝑝𝑒𝑟𝑎𝑡𝑖𝑜𝑛𝑎𝑙, 𝑎𝑛𝑑 𝑐𝑜𝑚𝑚𝑒𝑟𝑐𝑖𝑎𝑙 𝑒𝑥𝑝𝑒𝑟𝑡𝑖𝑠𝑒 𝑤𝑖𝑡ℎ 𝑎 𝑐𝑟𝑒𝑎𝑡𝑖𝑣𝑒 𝑎𝑝𝑝𝑟𝑜𝑎𝑐ℎ. 𝑊𝑒 𝑎𝑠𝑠𝑖𝑠𝑡 𝑐𝑙𝑖𝑒𝑛𝑡𝑠 𝑡ℎ𝑟𝑜𝑢𝑔ℎ 𝐶𝑜𝑛𝑠𝑢𝑙𝑡𝑖𝑛𝑔, 𝑆𝑡𝑟𝑎𝑡𝑒𝑔𝑦, 𝑅𝑒𝑠𝑒𝑎𝑟𝑐ℎ, 𝑎𝑛𝑑 𝑇ℎ𝑜𝑢𝑔ℎ𝑡 𝐿𝑒𝑎𝑑𝑒𝑟𝑠ℎ𝑖𝑝 𝑝𝑟𝑜𝑗𝑒𝑐𝑡𝑠. 𝑳𝒐𝒐𝒌𝒊𝒏𝒈 𝒇𝒐𝒓 𝒑𝒂𝒚𝒎𝒆𝒏𝒕 𝒍𝒆𝒂𝒓𝒏𝒊𝒏𝒈 𝒓𝒆𝒔𝒐𝒖𝒓𝒄𝒆? ◼️ Sign up to our unique Payment Assets Library here: https://lnkd.in/dVXjGkzB ◼️Follow Paypr.work [ˈpeɪpəwəːk] for more #paymentinfographics #paymentstrategy #payprwork #paymentinsights

🔒 𝗧𝗼𝗱𝗮𝘆'𝘀 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗗𝗲𝗲𝗽-𝗗𝗶𝘃𝗲: 𝗧𝗵𝗲 𝗘𝘃𝗼𝗹𝘂𝘁𝗶𝗼𝗻 𝗼𝗳 𝟯𝗗 𝗦𝗲𝗰𝘂𝗿𝗲 𝗔𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻 Let's look at how 3D Secure 2.0 (3DS 2.0) is revolutionizing payment authentication, with a focus on the technical implementation. 𝗧𝗵𝗲 𝗘𝘃𝗼𝗹𝘂𝘁𝗶𝗼𝗻 -- Originally developed in 1999, 3DS was built on a three-domain model: • Acquirer Domain (merchant/bank receiving payment) • Issuer Domain (cardholder's bank) • Interoperability Domain (supporting infrastructure) 🔧 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 - 𝟯𝗗𝗦 𝟮.𝟬 𝗘𝗻𝗵𝗮𝗻𝗰𝗲𝗱 𝗙𝗹𝗼𝘄 1. Customer initiates checkout 2. Merchant sends transaction to fraud vendor including data like:   • Device fingerprinting   • Geolocation data   • Transaction history   • Behavioral biometrics 3. Real-time risk assessment from fraud vendor -- Is the transaction risky? 4.From here, the transaction takes one of two possible paths:   a) Frictionless: Background authentication for low-risk transactions   b) Challenge: Biometric or one-time code for high-risk cases 🛠️ 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗜𝗺𝗽𝗿𝗼𝘃𝗲𝗺𝗲𝗻𝘁��� 𝗼𝘃𝗲𝗿 𝟯𝗗𝗦 𝟭.𝟬 1. Authentication Methods: • SDK integration for native mobile apps • Browser fingerprinting • Device binding • Biometric authentication • One-time passcodes 2. Data Exchange: • Minimum 20 data points required • Up to 100 data points supported • Real-time risk scoring • Device-specific information • Transaction history analysis 3. Protocol Enhancements: • Native app support • Out-of-band authentication • Decoupled authentication flows • Exemption handling • Delegated authentication support 💡 𝗜𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻 𝗕𝗲𝗻𝗲𝗳𝗶𝘁𝘀: 1. Superior Risk Assessment • 10x more data compared to 3DS 1.0 • Real-time device data collection • Enhanced fraud prevention capabilities • Intelligent risk-based authentication 2. Modern Authentication Methods • Biometric integration • Auto-filling OTP capabilities • Mobile banking app authentication • Device-optimized challenges 3. Enhanced Liability Protection • Fraud chargeback liability shift to issuers • Protection even when issuers don't participate • Reduced merchant risk exposure 4. Seamless Integration • Native SDK support for iOS/Android • Optimized iFrame for browsers • Embedded checkout experience • Device-responsive design 5. Improved Acceptance Rates • Reduced acceptance gap between POS and CNP • Enhanced issuer confidence • Better transaction success rates What are your thoughts on 3DS? 💬 Sources: ACI Worldwide, inai (YC S21), Worldpay #Payments #FinTech #3DS2 #FraudPrevention #Authentication

🚨 Deep Dive: Google’s AP2 Explained: The Rulebook for Agent-Led Payments Imagine telling your AI assistant to “just buy it for me” and having it actually go through with the purchase – safely, securely, and without you clicking any “Buy Now” button. Google’s new Agent Payments Protocol (AP2) is betting on exactly that future. Announced in September 2025, AP2 is an open standard designed so AI agents can initiate payments on our behalf across different platforms. In other words, it’s a common rulebook that lets your autonomous digital sidekicks not only talk a big game, but also transact – whether that means paying a merchant, subscribing to a service, or even paying another agent. And it’s not just a Google pet project; over 60 organizations (from Mastercard and American Express to Coinbase and PayPal) are collaborating to shape this standard. Why? Because as AI assistants evolve from simple chatbots into full-fledged shopping and task-doing agents, the last missing piece is giving them a wallet – and making sure they don’t run off with it. But enabling AI-driven payments isn’t as simple as handing your credit card to a robot. It raises a million questions around trust: How do you prove an AI had permission to make a purchase? How can a merchant be sure the request isn’t some AI hallucination or fraud? And if something goes wrong, who’s liable – you, the agent’s creator, the bank? These are exactly the trust issues AP2 tackles head-on, with a blend of cryptography, digital “contracts,” and industry-wide guardrails. In this deep dive, we’ll break down why AP2 exists, how it works (in plain English, promise!), and what it means for banks, payment networks, stablecoins, and the whole fintech world. Grab your favorite fintech beverage (kombucha? coffee?) and let’s explore this new protocol that has AI agents doing more and more – and might just change how we think about payments. Would you let your chatbot pick up the tab? Let’s see if AP2 can make that a reality #fintech #payments #banking

Google recently launched the AP2 Protocol, a new standard designed for secure, agent-driven payments in the age of AI. As AI agents start making purchases, traditional systems built for humans face risks around fraud, authority, and accountability. AP2 bridges this gap with an open, verifiable protocol. Here’s how AP2 is shaping the future of payments:  - Why AP2 Matters Old payment rails assume a human approves each step. AP2 ensures authorization, authenticity, and accountability for every agent-led transaction—closing the human vs. agent gap. - How AP2 Works At its core are cryptographically signed mandates. Agents can execute real-time purchases through Cart Mandates or carry out delegated tasks like ticket bookings—all secured with an auditable chain of evidence. - Unlocking New Commerce Models AP2 enables smarter shopping, personalized bundles, and coordinated multi-party bookings, turning commerce into proactive, intelligent experiences led by AI agents. - Universal Payments It supports cards, bank transfers, stablecoins, and crypto, with backing from PayPal, Mastercard, Coinbase, and more - building a global foundation for AI-driven commerce. AI agents will not just shop - they’ll transact. And AP2 is the protocol making that future safe, scalable, and universal. What do you think about this?

AP2 could be the backbone of how AI agents buy, sell, and move money. Google just dropped Agent Payments Protocol (AP2) This is a new open standard built with partners across the financial industry (Mastercard, PayPal, Coinbase, etc.) to let AI agents securely make payments on your behalf, across cards, banks, and stablecoins. Why it matters for security and safety: 1. Every payment is tied to a signed mandate (spending limits, timing, items). 2. An audit trail links user intent to cart to payment, reducing disputes. 3. Merchants can verify an agent’s authority, cutting fraud and misuse. Implications: 1. Users get automated commerce through agents (think “autonomous shopping”). 2. Merchants and payment providers cut risk with a shared trust layer. 3. The ecosystem gains a foundation for agent-led, AI-driven transactions. 3 Questions: 1. What use cases might we see in the future if this continues to develop? 2. If identity or security isn't handled appropriately, what sorts of attacks can arise, and how damaging could they be? 3. How the heck will anyone get concert tickets the old-fashioned way once human-not-present is enabled? 🤣 This is a significant step forward, but there is quite a lot to think about. Link in the comments.

Wow.. a major step forward for the future of AI-driven commerce! Google, along with over 60 industry leaders like Mastercard PayPal and Salesforce, has announced the Agent Payments Protocol (AP2). This isn't just a minor update; it's a new, open standard that will fundamentally change how we transact online. What is it? Put simply, AP2 is a "common language" that allows AI agents (like your personal shopping assistant) to securely and verifiably make purchases on your behalf. Why does it matter? Until now, online payments have assumed a human is clicking the "buy" button. As AI agents become more autonomous, we need a new framework to answer critical questions: "Did the user really authorize this purchase?" "Is the agent acting on the user's true intent?" "Who is accountable if something goes wrong?" AP2 solves this by using "Mandates"..basically tamper-proof, cryptographically-signed digital contracts that act as verifiable proof of your instructions. What this means: - For Consumers: A huge boost in trust and security. You can confidently delegate tasks to an agent—like "Buy my concert tickets the moment they drop" or "Book a flight and hotel within my $700 budget" knowing it will execute exactly what you authorized. - For the Industry (Merchants & Payment Providers): This is a game-changer. It provides a single, open standard, reducing friction and preventing a fragmented market. It creates a clear audit trail, which will dramatically reduce fraud and disputes. - For the Future: This protocol unlocks the AI-driven commerce experiences we've been dreaming of, from automated procurement for businesses to highly personalized, bundled offers for shoppers, all built on a foundation of trust.. I think this is a critical piece of infrastructure for the next generation of the internet. You can read the full announcement here: https://lnkd.in/gUjrrbWZ

Google has unveiled the Agent Payments Protocol (AP2), an innovative open framework empowering #AIagents to conduct secure transactions on behalf of users. This initiative has garnered support from over 60 prominent financial and tech entities. - AP2 introduces "mandates," secure digital contracts ensuring user authorization before transactions are finalized. - Real-time purchases necessitate dual approvals: an "Intent Mandate" for search activities and a "Cart Mandate" for payment completion. - The framework accommodates traditional cards, bank transfers, and stablecoins in partnership with Coinbase and other cryptocurrency firms. - Noteworthy supporters include American Express, Mastercard, PayPal, Salesforce, and Intuit, with technical specifications openly accessible on GitHub. The advent of #AI agents as independent shoppers marks a pivotal juncture. Establishing secure payment channels is crucial for the mainstream integration of this technology. Google's protocol addresses the accountability challenges associated with AI-managed finances, fostering trust and paving the way for widespread adoption by collaborating with various industry leaders. https://lnkd.in/dBf5R6UJ