Lesson 1Runtime protections: on-chain limits, slippage bounds, debt ceilings, rate limitsThis part explains run-time guards that force safe work lines, like on-chain limits, slip controls, debt tops, and rate limits that hold setup act under stress or attack.
On-chain limits and rail paramsSlip lines and price hit capsDebt tops and show controlsRate limits and flow slowKill switches and soft downLesson 2Safe upgrade and deployment strategies: immutable core vs upgradeable modules, upgrade governanceThis part explains safe rollout and update ways, comparing no-change hearts and update parts, setting update rules, test lines, and back plans to cut risk in contract changes.
No-change heart vs update partsProxy ways and store safetyUpdate rules and vote flowsStage, canary, and step rolloutsBack, freezes, and move plansLesson 3Secure smart contract design patterns: checks-effects-interactions, pull-over-push, nonReentrant, circuit breakersThis part brings in heart safe setup ways for smart contracts, like checks-effects-links, pull-over-push pays, nonReenter guards, and break stoppers that limit harm from bugs or attacks.
Checks-effects-links wayPull over push pay setupsReenter guards and nonReenterBreak stoppers and urgent stopsEntry control and skill waysLesson 4Developer processes: code review checklists, pre-merge CI gates, dependency management, reproducible buildsThis part covers safe build ways, like code look lists, pre-join CI gates, link handle, and repeat builds that sure steady, checkable, and tamper-proof gives.
Safety-focused code look listsPre-join CI and must test gatesHandling third-side linksRepeat and sure buildsGive sign and bit true-checkLesson 5Key management and operational hygiene: hardware wallets, threshold signatures, secret rotation policiesThis part covers safe key life handle for blockchain works, like hardware wallets, line signs, back and back-up, turn rules, and work clean to stop key steal, bad use, or chance loss.
Hardware wallets for work signersLine and MPC sign setupsSafe key back and back-up plansKey turn and pull-back stepsWork spot and net clean controlsLesson 6Documentation and transparency: security disclosures, public parameters, bug bounty visibilityThis part tells how to note safety ideas, public params, admin powers, and update rules, and how to run clear bug hunts that help users and checkers get and trust the system.
Noting trust and danger modelsPutting out admin jobs and powersPublic params and risk tellsBug hunt scope and seeChange logs and user-face updatesLesson 7Monitoring and incident response: metrics to track, alert thresholds, playbooks, and forensics preparationThis part details how to check blockchain systems, set safety and sure counts, set alert lines, ready event books, and gather find data to back quick look and good after-deaths.
Heart safety and sure countsAlert lines and up pathsEvent answer book setupOn-chain and off-chain note gatherFind ready and proof handleLesson 8Admin controls and governance: multisig, timelocks, role separation, emergency pause proceduresThis part explains how to build strong admin rule using multi-sign wallets, time locks, job split, and urgent pause controls, cutting one weak spots and limiting harm spread of right acts.
Building safe multi-sign admin walletsSetting time locks for key actsJob split and least right modelsUrgent pause and break stopper booksGive out, signers turn, and checksLesson 9Oracle hardening controls: multi-source feeds, TWAP, oracle guardians, dispute windowsThis part focuses on toughen oracle setups using multi-source feeds, TWAP setups, guards, fight windows, and fail-over ways to cut change risk and sure tough, trust price data.
Multi-source and middle price feedsTWAP and liquid-aware pricingOracle guards and kill switchesFight windows and challenge flowsFail-over, live, and old data checksLesson 10Testing and QA best practices: deterministic tests, fuzz targets, simulated attacker testsThis part shows test and QA ways for smart contracts, like sure unit tests, fuzz, property tests, and show attacker scenes that show edge cases and safety weak spots.
Sure unit and join testsFuzz and property testingShow attacker and mess testsTest cover and steady trackTest data, fix, and setups
