All admin functions verify the caller is the CONTRACT-OWNER:

(define-constant CONTRACT-OWNER tx-sender)

(asserts! (is-eq tx-sender CONTRACT-OWNER) (err ERR-NOT-AUTHORIZED))

Inter-contract calls use authorized caller maps:

(define-map authorized-callers principal bool)

1. Escrow Pattern: All member funds are held in the escrow contract, not individual wallets
2. Atomic Payouts: Payouts are processed atomically to prevent partial transfers
3. Balance Verification: Contract verifies sufficient balance before any transfer

All public functions validate inputs:

• Contribution amounts within bounds (0.01 - 100 STX)
• Member counts within limits (3 - 50)
• Payout intervals within range (1 - 30 days)
• Reputation scores capped at 1000

Clarity's design inherently prevents reentrancy:

• No callbacks during STX transfers
• State changes are atomic

The admin can pause the entire protocol in emergencies:

(define-public (set-protocol-paused (paused bool)))

When paused:

• No new circles can be created
• No new members can join
• Existing payouts can still be claimed

Members can request emergency withdrawal with:

• 7-day cooldown period
• Penalty fee deduction
• Maximum 30% of circle members can exit

1. Circle Creator Lock: The creator cannot leave once the circle starts
2. Fixed Payout Order: Slot order is determined at join time and cannot change
3. No Partial Contributions: Members must contribute the full amount
4. Single Active Circle: Members can only be in one circle at a time (per contract version)

DO NOT open public GitHub issues for security vulnerabilities.

Please report security issues via email to the development team with:

• Description of the vulnerability
• Steps to reproduce
• Potential impact assessment

1. Verify Contract Addresses: Always confirm you're interacting with official contracts
2. Start Small: Test with small amounts before committing larger sums
3. Know Your Circle: Only join circles with trusted members
4. Check Reputation: Review member reputation scores before joining
5. Understand Emergency Exit: Know the penalties before requesting emergency withdrawal