LeakCheck alternatives 2026: 10 providers compared
LeakCheck is a provider headquartered in the United Kingdom and was included in this comparison through The Infostealer Index 2026. Its overall score is 16.9 out of 100, ranking 66th among 100 providers.
- Published
- Scanned
- 3–4 November 2026
- Infostealer score source
- The Infostealer Index 2026, 12 October 2026
- Overall score and rank
- 16.9 / 100 · 66th of 100
- Infostealer
- 27.7 / 100 · 34th of 35
- Third-party risk
- 0 / 10 · 54th of 98
- Phishing and brand protection
- 0 / 10 · 61st of 98
- Executive protection
- 0 / 10 · 28th of 98
- Attack surface management
- 0 / 10 · 81st of 98
- API
- 10 / 10 · Public documentation
- Country
- United Kingdom
- Selection source
- The Infostealer Index 2026
- Website scanned
- leakcheck.io
- Country information source
- Country information source: SaaSworthy (single source).
LeakCheck score profile
- Infostealer
- 27.7 / 100 · average 53.8
- Third-party risk
- 0 / 10 · average 2.8
- Phishing and brand protection
- 0 / 10 · average 3.7
- Executive protection
- 0 / 10 · average 1.6
- Attack surface management
- 0 / 10 · average 4.9
- API
- 10 / 10 · average 5.3
Each average is calculated from the providers measured in that category.
LeakCheck ranks 66th among 100 providers with an overall score of 16.9, placing it in the lower half. The next score up belongs to SwordSec, S4E, Microsoft and 4 more providers (18.4, 1.5 points higher). The next score down belongs to SOS Intelligence and Hold Security (16.4, 0.5 points lower).
Among the 34 providers selected through the same source (The Infostealer Index 2026), it ranks 31st. The highest overall score in the group belongs to Bitsight (Cybersixgill) (72.3), 55.4 points above. Among the 7 providers headquartered in the United Kingdom it ranks 5th; the closest scores in that list belong to Intruder (18.4) and SOS Intelligence (16.4).
Of its overall score of 16.9, 11.7 points come from infostealer, -0.1 from the four product categories and 5.3 from the API score; the largest share, 69%, comes from the infostealer score. It is one of 37 providers with public API documentation.
Its infostealer score is 27.7, ranking 34th among the 35 providers with this score. Of the seven criteria, its highest score is in free access (7 / 10; ranked 7th). Its lowest is in device-level infection details (1 / 10; ranked 34th). It is above the average on 1 of the seven criteria.
It does not score above the average of 98 providers in any of the four product categories. It falls furthest below the average in attack surface management: 0 / 10 against 4.9.
Its score distribution is closest to Intelligence X: overall score 19.8, with the same score in 4 of the four categories.
Why look for alternatives
- Infostealer score 27.7; 33 providers score higher in this category.
- No capability was identified on the scanned pages in third-party risk, phishing and brand protection, executive protection and attack surface management.
10 closest alternatives
The list is drawn from providers that score in LeakCheck’s highest-scoring category (infostealer): the 3 with the highest overall score and the 7 whose overall score is closest to LeakCheck.
- Dark Radar94.0
- Bitsight (Cybersixgill)72.3
- NordStellar69.9
- StealthMole22.0
- HackedList20.4
- Intelligence X19.8
- Farnsworth Intelligence19.4
- LeakCheck16.9
- SOS Intelligence16.4
- Hold Security16.4
- Kaduu13.9
- 1
Dark Radar
Overall score 94.0 (1st; 77.1 points above LeakCheck). Scores higher than LeakCheck in infostealer (98.2 vs LeakCheck 27.7), third-party risk (9 vs LeakCheck 0), phishing and brand protection (9 vs LeakCheck 0), executive protection (9 vs LeakCheck 0) and attack surface management (9 vs LeakCheck 0).
Türkiye · Website scanned: darkradar.com
- 2
Bitsight (Cybersixgill)
Overall score 72.3 (2nd; 55.4 points above LeakCheck). Scores higher than LeakCheck in infostealer (46.7 vs LeakCheck 27.7), third-party risk (10 vs LeakCheck 0), phishing and brand protection (10 vs LeakCheck 0), executive protection (8 vs LeakCheck 0) and attack surface management (8 vs LeakCheck 0).
United States · Website scanned: bitsight.com
- 3
NordStellar
Overall score 69.9 (3rd; 53.0 points above LeakCheck). Scores higher than LeakCheck in infostealer (66.1 vs LeakCheck 27.7), phishing and brand protection (10 vs LeakCheck 0), executive protection (10 vs LeakCheck 0) and attack surface management (8 vs LeakCheck 0).
Lithuania · Website scanned: nordstellar.com
- 4
StealthMole
Overall score 22.0 (46th; 5.1 points above LeakCheck). Scores higher than LeakCheck in infostealer (45.9 vs LeakCheck 27.7). API: behind a login or contract.
Singapore · Website scanned: stealthmole.com
- 5
HackedList
Overall score 20.4 (56th; 3.5 points above LeakCheck). Scores higher than LeakCheck in infostealer (35.9 vs LeakCheck 27.7).
Czechia · Website scanned: hackedlist.io
- 6
Intelligence X
Overall score 19.8 (57th; 2.9 points above LeakCheck). Scores higher than LeakCheck in infostealer (34.6 vs LeakCheck 27.7).
Czechia · Website scanned: intelx.io
- 7
Farnsworth Intelligence
Overall score 19.4 (58th; 2.5 points above LeakCheck). Scores higher than LeakCheck in infostealer (46.0 vs LeakCheck 27.7). API: no documentation found.
United States · Website scanned: farnsworthintelligence.com
- 8
SOS Intelligence
Overall score 16.4 (67th; 0.5 points below LeakCheck). Scores higher than LeakCheck in infostealer (32.8 vs LeakCheck 27.7). API: behind a login or contract.
United Kingdom · Website scanned: sosintel.co.uk
- 9
Hold Security
Overall score 16.4 (67th; 0.5 points below LeakCheck). Scores higher than LeakCheck in infostealer (39.0 vs LeakCheck 27.7). API: no documentation found.
United States · Website scanned: holdsecurity.com
- 10
Kaduu
Overall score 13.9 (76th; 3.0 points below LeakCheck). Scores lower in infostealer (26.7 vs LeakCheck 27.7). API: behind a login or contract.
Switzerland · Website scanned: kaduu.io
LeakCheck vs Dark Radar, Bitsight (Cybersixgill) and NordStellar
| Criterion | LeakCheck | Dark Radar | Bitsight (Cybersixgill) | NordStellar |
|---|---|---|---|---|
| Overall score | 16.9 | 94.0 | 72.3 | 69.9 |
| Overall rank | 66th | 1st | 2nd | 3rd |
| Infostealer score | 27.7 | 98.2 | 46.7 | 66.1 |
| Infostealer focus (15%) | 4 | 9 | 4 | 6 |
| Device-level infection details (15%) | 1 | 10 | 5 | 8 |
| Employee, customer and supplier segmentation (12%) | 1 | 10 | 4 | 6 |
| Session cookie and token coverage (10%) | 1 | 10 | 5 | 9 |
| Collection timeliness (10%) | 5 | 10 | 7 | 7 |
| Published research (10%) | 1 | 10 | 7 | 6 |
| Free access (10%) | 7 | 10 | 1 | 4 |
| Third-party risk | 0 | 9 | 10 | 0 |
| Phishing and brand protection | 0 | 9 | 10 | 10 |
| Executive protection | 0 | 9 | 8 | 10 |
| Attack surface management | 0 | 9 | 8 | 8 |
| API | 10 | 10 | 10 | 10 |
| Country | United Kingdom | Türkiye | United States | Lithuania |
| Selection source | The Infostealer Index 2026 | Türkiye-linked providers | The Infostealer Index 2026 | The Infostealer Index 2026 |
Overall and infostealer scores are out of 100; criterion and category scores are out of 10. “–” means the component could not be measured.
Related pages
This comparison was prepared through web scanning and source review carried out with Claude Opus 5.5.