#security hackathon ideas

Ideas tagged security

• AI

  Smart Document Redactor

  Automatically blur personal details before you share a document

  Intermediate14h1–2

  Tesseract.jsTransformers.jsCanvas

  17/20

• Fintech

  Payment Scam Message Detector

  Paste a suspicious payment message and get a scam risk verdict

  Intermediate14h1–2

  LLMNext.jsClassifier

  17/20

• Fintech

  Transaction Anomaly Detector

  Spot unusual transactions with explainable reasons

  Advanced24h2–3

  PythonScikit-learnFastAPI

  17/20

• Fintech

  Encrypted Family Finance Vault

  Store policies, accounts and nominee details so family can find them when needed

  Intermediate16h1–2

  Next.jsWeb CryptoPostgres

  17/20

• Fintech

  Financial Data Consent Manager

  See and revoke which apps can access your financial data

  Advanced24h2–3

  Next.jsOAuthPostgres

  17/20

• Web3

  Multisig Transaction Previewer

  Show signers what a pending multisig transaction will really do

  Intermediate16h1–2

  ViemNext.jsLLM

  17/20

• Web3

  Transaction Simulation Before Signing

  See exactly which tokens leave your wallet before you sign

  Advanced24h2–3

  FoundryViemNext.js

  17/20

• Web3

  Token Approval Revoker

  Find and revoke old unlimited token approvals

  Intermediate12h1–2

  ViemWagmiNext.js

  17/20

• Web3

  Signature Request Decoder

  Explain what an off-chain signature request actually allows

  Intermediate12h1

  ViemLLMNext.js

  17/20

• Web3

  Social Recovery Wallet

  Recover a wallet through trusted friends instead of a seed phrase

  Advanced28h2–3

  Account AbstractionSolidityWagmi

  17/20

• Web3

  Solidity Bug-Fix Tutor

  Practise fixing real vulnerability patterns with instant feedback

  Intermediate16h1–2

  FoundrySlitherLLM

  17/20

• Web3

  First Wallet Testnet Sandbox

  Learn to use a wallet safely with fake money and guided missions

  Beginner10h1–2

  WagmiNext.jsTestnet

  17/20

• Devtools

  Dependency Health Checker

  See which dependencies are abandoned, vulnerable or heavy

  Beginner10h1

  Node.jsnpm registry APINext.js

  17/20

• Devtools

  Semgrep Rule from Example

  Show a bad code example and get a static analysis rule that finds it everywhere

  Intermediate12h1

  SemgrepLLMNode.js

  17/20

• Devtools

  Kubernetes YAML Explainer

  Paste a manifest and get each part explained with risks highlighted

  Beginner10h1

  Node.jsLLM

  17/20

• AI

  Prompt Injection Playground

  Attack your own LLM app with known injection patterns and see which ones get through

  Intermediate18h1–3

  LLMNode.jsNext.js

  16/20

• AI Agents

  Code Review Agent

  Catches risky changes before a human reviewer looks at the PR

  Intermediate36h2–3

  PythonGitHub APILLM

  16/20

• AI Agents

  Read-Only Postgres MCP Server with Guardrails

  Let an AI assistant query your database safely with read-only, row-limited access

  Intermediate14h1–2

  MCP SDKPostgresNode.js

  16/20

• AI Agents

  Agent Tool Permission Gateway

  Put a policy layer between agents and tools so risky actions need approval

  Advanced26h1–3

  Node.jsMCP SDKPostgres

  16/20

• Web3

  Proxy Upgrade Diff Checker

  Check an upgradeable contract change for storage layout breaks

  Advanced22h1–2

  FoundryOpenZeppelinNode.js

  16/20

• Devtools

  Vibe Coding Safety Net

  Catches leaked secrets and risky patterns in AI-written code before push

  Intermediate24h1–2

  Node.jsGitleaksLLM

  16/20

• Devtools

  Shell Command Explainer

  Paste a command and see what each part does before you run it

  Beginner6h1

  JavaScriptLLM

  16/20

• Devtools

  Security Headers Checker

  Scan a site's headers and get copy-paste fixes for your framework

  Beginner8h1

  Node.jsNext.js

  16/20

• Web3

  Smart Contract Risk Scanner

  Explains static-analysis findings in plain language with fixes

  Advanced36h2–3

  PythonSlitherLLM

  15/20