Funding a virtual card or paying directly with stablecoins like USDT and USDC carries risks that don't exist with a traditional bank card — a flash loan attack can drain a protocol's liquidity pool in a single transaction, MEV bots run sandwich trades that show up as unexplained slippage on your swap, and cross-chain bridges have a long history of security incidents. These 11 articles are grouped into security mechanics, cross-chain fund management, and hands-on payment troubleshooting. They explain how these attacks actually work, and also cover practical questions like consolidating stablecoins scattered across multiple chains and recovering funds sent to the wrong chain.
The security mechanics behind stablecoin payments
Funding an AI subscription with stablecoins carries on-chain risks that don’t exist with traditional payment rails. This group breaks down flash loan attacks, sandwich trades, and bridge vulnerabilities in concrete terms.
- Flash Loan Attacks: Draining a Protocol in One Transaction — How flash loan attacks work and what they mean for stablecoin payments
- Sandwich Attacks Explained: How MEV Bots Eat Your Slippage — The slippage you see on a swap may be a sandwich attack by an MEV bot
- What Actually Broke: A History of Cross-Chain Bridge Hacks — A history of what actually broke in past cross-chain bridge hacks
- What Actually Backs USDT and USDC's Dollar Peg — Comparing reserve transparency and stability between USDT and USDC
Managing funds across multiple chains
Having stablecoins scattered across several chains is the normal state for most people. This group covers whether to diversify, how to consolidate scattered holdings, and how to pick a cross-chain swap tool.
- Should You Consolidate Your AI Subscription Stablecoins? — Whether to spread stablecoin holdings across multiple chains, and the trade-offs
- Consolidating Scattered Stablecoins for AI Subscriptions — A practical method for consolidating USDT/USDC scattered across chains
- The Stablecoin Cross-Chain Swap Tool Guide for AI Subscriptions — How to choose a cross-chain swap tool without getting burned
Making the payment and fixing what goes wrong
When it’s time to actually pay, chain selection, failed charges, and sending to the wrong chain are the three places people most often get stuck. This group gives concrete steps and fixes.
- Paying for AI Subscriptions with Stablecoins: USDT/USDC Chain Selection & Bridging Guide — How to pick a chain and how long settlement actually takes
- Stablecoin Payment Failed? A Troubleshooting Guide for AI Subscriptions — Common reasons a stablecoin charge fails, and how to check each one
- Sent Stablecoins to the Wrong Chain? A Recovery Guide for AI Subscriptions — Whether funds sent to the wrong chain can still be recovered
- Why the Swap Quote and the Amount That Arrives Don't Match — Where the gap between a swap's quote and its settled amount actually comes from