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keyhunter/.planning/phases/09-osint-infrastructure/09-03-SUMMARY.md
salvacybersec 1eb86ca308 docs(09-03): complete stealth UA pool and dedup plan 
- Stealth UA pool (10 browsers) + RandomUserAgent/StealthHeaders
- Stable cross-source Dedup keyed by sha256(provider|masked|source)
- Mark RECON-INFRA-06 complete
2026-04-06 00:44:37 +03:00

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phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed
phase plan subsystem tags requires provides affects tech-stack key-files key-decisions patterns-established requirements-completed duration completed
09-osint-infrastructure 03 recon
stealth
user-agent
dedup
sha256
osint
phase provides
09-osint-infrastructure pkg/recon package namespace (Plan 09-01, parallel wave 1)
pkg/recon/stealth.go: 10-entry browser UA pool with RandomUserAgent/StealthHeaders helpers
pkg/recon/dedup.go: stable cross-source Finding dedup keyed by sha256(provider|masked|source)
09-01
09-02
10-sources
11-sources
12-sources
13-sources
14-sources
15-sources
16-sources
added patterns
stdlib-only dedup (crypto/sha256 + encoding/hex)
first-seen-wins stable dedup preserving input order
cross-platform UA pool covering desktop + mobile
created modified
pkg/recon/stealth.go
pkg/recon/stealth_test.go
pkg/recon/dedup.go
pkg/recon/dedup_test.go
Use engine.Finding directly in dedup.go instead of a local Finding alias to avoid duplicate type declaration with Plan 09-01's source.go in parallel wave 1
Hash key = sha256(ProviderName|KeyMasked|Source) so same key found at different URLs is retained
Stable dedup: first-seen metadata (DetectedAt, Confidence) wins over later duplicates
Stealth mode helpers: exported RandomUserAgent + StealthHeaders for recon sources to merge into requests
Stable dedup primitive: Dedup([]engine.Finding) []engine.Finding, stdlib only, O(n)
RECON-INFRA-06
8min 2026-04-05

Phase 09 Plan 03: Stealth UA Pool + Cross-Source Dedup Summary

10-entry browser User-Agent pool with RandomUserAgent/StealthHeaders and a stable SHA256-keyed Finding Dedup primitive ready for SweepAll orchestration.

Performance

  • Duration: ~8 min
  • Started: 2026-04-05T21:35:00Z
  • Completed: 2026-04-05T21:43:18Z
  • Tasks: 2 (both TDD)
  • Files created: 4

Accomplishments

  • Stealth UA pool with 10 realistic browser User-Agents covering Chrome/Firefox/Safari/Edge on Windows, macOS, Linux, iOS, and Android
  • RandomUserAgent() + StealthHeaders() helpers returning rotated UA + Accept-Language: en-US,en;q=0.9
  • Stable cross-source Dedup([]engine.Finding) []engine.Finding keyed by sha256(ProviderName|KeyMasked|Source)
  • First-seen metadata preserved; different Source URLs keep the same provider+masked key as distinct findings
  • go test ./pkg/recon/ green, go vet ./pkg/recon/... clean

Task Commits

TDD flow (test → feat per task):

  1. Task 1: Stealth UA pool + RandomUserAgent
    • RED: bbbc05f (test: add failing test for stealth UA pool)
    • GREEN: 2c140e9 (feat: implement stealth UA pool and StealthHeaders)
  2. Task 2: Cross-source finding dedup
    • RED: ecfa2bf (test: add failing test for cross-source Dedup)
    • GREEN: 2988fdf (feat: implement stable cross-source finding Dedup)

Files Created/Modified

  • pkg/recon/stealth.go — 10-entry UA pool, RandomUserAgent, StealthHeaders
  • pkg/recon/stealth_test.go — TestUAPoolSize, TestRandomUserAgentInPool (100 iterations), TestStealthHeadersHasUA
  • pkg/recon/dedup.go — Dedup([]engine.Finding) []engine.Finding with sha256 key + stable first-seen semantics
  • pkg/recon/dedup_test.go — TestDedupEmpty, TestDedupNoDuplicates, TestDedupAllDuplicates, TestDedupPreservesFirstSeen, TestDedupDifferentSource

Decisions Made

  • Use engine.Finding directly in dedup.go rather than a local recon.Finding alias. Plan 09-01 (same wave, parallel) will declare type Finding = engine.Finding in pkg/recon/source.go. Declaring it again here would cause a post-merge duplicate declaration. Importing engine.Finding explicitly is forward-compatible — when 09-01 merges, recon.Finding becomes available and this file continues to compile either way.
  • Dedup key = sha256(ProviderName|KeyMasked|Source). Masked key avoids hashing plaintext; including Source ensures a leaked key found at multiple URLs is reported at every location rather than collapsed to one.
  • Stable first-seen wins. Iteration is single-pass with a seen map; output order matches input order.

Deviations from Plan

Auto-fixed Issues

1. [Rule 3 - Blocking] Use engine.Finding instead of local Finding alias

  • Found during: Task 2 (Dedup implementation)
  • Issue: Plan 09-03 executes in wave 1 parallel with Plan 09-01. Plan 09-01 declares type Finding = engine.Finding in pkg/recon/source.go. The original plan body for 09-03 referenced bare Finding in dedup.go, which would require either a duplicate alias (post-merge conflict/duplicate declaration) or a dependency on 09-01's file that does not yet exist on this branch.
  • Fix: Imported github.com/salvacybersec/keyhunter/pkg/engine in dedup.go and dedup_test.go and used engine.Finding directly. Behavior and test coverage are identical; signature is Dedup([]engine.Finding) []engine.Finding. A doc comment in dedup.go records the rationale.
  • Files modified: pkg/recon/dedup.go, pkg/recon/dedup_test.go
  • Verification: go test ./pkg/recon/ -count=1 passes; go vet ./pkg/recon/... clean.
  • Committed in: 2988fdf (Task 2 GREEN commit)

Total deviations: 1 auto-fixed (1 blocking / parallel-safety) Impact on plan: No scope change. The public signature matches downstream expectations because recon.Finding is a type alias — []recon.Finding and []engine.Finding are interchangeable, so SweepAll (Plan 09-01) can still call Dedup without any adapter.

Issues Encountered

None beyond the deviation above.

User Setup Required

None.

Next Phase Readiness

  • Plan 09-02 (rate limiter + jitter) can import StealthHeaders for outbound requests when Config.Stealth is true.
  • Plan 09-01's Engine.SweepAll can call recon.Dedup(all) before returning to satisfy RECON-INFRA-08's "deduplicates findings before persisting" criterion.
  • RECON-INFRA-06 (stealth UA rotation) satisfied.

Self-Check: PASSED

  • FOUND: pkg/recon/stealth.go
  • FOUND: pkg/recon/stealth_test.go
  • FOUND: pkg/recon/dedup.go
  • FOUND: pkg/recon/dedup_test.go
  • FOUND commit: bbbc05f
  • FOUND commit: 2c140e9
  • FOUND commit: ecfa2bf
  • FOUND commit: 2988fdf

Phase: 09-osint-infrastructure Plan: 03 Completed: 2026-04-05