The Infostealer Index · Head-to-head
KKaduuor
LLeakCheck?
Where Kaduu and LeakCheck differ on infostealer intelligence, biggest gap first.
K Kaduu is a Swiss company whose DarknetSearch service watches the dark and deep web for exposed company data, mainly for MSSPs and SOCs. Botnet logs are one of several sources; there is no dedicated infostealer module.
L LeakCheck is a breach-data search engine with a web app, Telegram bot and API. Stealer-log search is limited to its Enterprise plan.
KL
Quick take
LeakCheck leads by a clear margin, 36.9 to 33.3 overall. The biggest single difference is free access, where LeakCheck scores 7 against 4. Of the nine criteria, Kaduu is ahead on 3, LeakCheck on 4, and 2 are level.
Where they differ
Criteria with more than half a point between them, largest gap first.
Free Tools & Free API
LLeakCheck +3
KKaduu 4
LLeakCheck 7
API & Integrations
LLeakCheck +2
KKaduu 5
LLeakCheck 7
Infostealer Specialization
LLeakCheck +1
KKaduu 3
LLeakCheck 4
Machine-Level Infection Context
KKaduu +1
KKaduu 2
LLeakCheck 1
Exposure Segmentation
KKaduu +1
KKaduu 2
LLeakCheck 1
Infostealer Research & Attribution
KKaduu +1
KKaduu 2
LLeakCheck 1
Pricing Accessibility & Time-to-Value
LLeakCheck +1
KKaduu 8
LLeakCheck 9
Where they are level
Within half a point of each other.
Capabilities
4 of 8 capabilities differ.
| Capability | KKaduu | LLeakCheck |
|---|---|---|
| Third-party / supply-chain exposure | No | Partial |
| API access | Partial | Yes |
| Free tier / free API | Partial | Yes |
| Self-serve signup | Partial | Yes |
Same on both: Machine-level infection data (no), Session cookies & tokens (no), Employee vs. customer split (no), Public infostealer research (no).
Side by side
| Detail | KKaduu | LLeakCheck |
|---|---|---|
| Best suited to | MSSPs wanting affordable dark web monitoring | Low-cost credential lookups and bulk checks |
| Pricing | Low flat-rate entry pricing reported; free trial | From $9.99 a month; Enterprise from $179 per quarter |
| Headquarters | Zug, Switzerland | London, UK |
| Founded | 2018 | Not disclosed |
| Ownership | Independent | Independent |
| Website | kaduu.io | leakcheck.io |
Questions & answers
Which scores higher, Kaduu or LeakCheck?
LeakCheck, with 36.9/100 against 33.3/100 (ranks #31 and #34).
Where do Kaduu and LeakCheck differ most?
On free tools & free api: Kaduu scores 4 and LeakCheck scores 7.
Who is each one a good fit for?
Kaduu suits mSSPs wanting affordable dark web monitoring. LeakCheck suits low-cost credential lookups and bulk checks.
More head-to-heads
Each vendor against its closest peers.
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Scores are Hudson Rock's editorial opinion of each vendor's infostealer intelligence, based on public information (websites, documentation and published research) as of October 12, 2026. Only infostealer-related capabilities are assessed, not a vendor's overall quality or other products. Field averages, peer matches and comparisons are calculated from those scores.
This is general information, not a recommendation to buy or avoid any product, and it may be out of date: confirm details with each vendor. Product names and logos belong to their owners and are used only to identify them. Vendors can request a correction through Hudson Rock's contact page.