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Protect against frontrunning and sandwich attacks on subscription charges #430

@Smartdevs17

Description

@Smartdevs17

Description

Subscription charges are visible in mempool and vulnerable to MEV. Implement protection mechanisms.

Acceptance Criteria

  • Commit-reveal scheme for large charges
  • Slippage protection with max fee bounds
  • Private mempool integration option
  • MEV extraction monitoring
  • Gas price analysis for attack detection
  • Documentation of MEV threat model

Technical Scope

  • contracts/subscription/src/lib.rs
  • Edge: commit-reveal UX impact, private mempool censorship, gas bidding analysis

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    200-points200 point issuedrips-waveIssues in the Drips Wave programhighHigh complexity issue

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