The Infostealer Index · Head-to-head
HHudson Rockor
FFlare?
Where Hudson Rock and Flare differ on infostealer intelligence, biggest gap first.
H Hudson Rock was started by former members of IDF Unit 8200 and works on one problem only: infostealer infections. Its Cavalier platform shows what each infected computer leaked, from credentials and cookies to the malware path and antivirus in place, and splits a company's exposure into employees, users, third parties and suppliers. It is also the research team behind InfoStealers.
F Flare, from Montreal, is a threat exposure management platform that watches the clear and dark web, Telegram and criminal forums. It matches stealer logs to a customer's identities and alerts on leaked credentials and live sessions, and its data is also embedded in other vendors' products.
HF
Quick take
Hudson Rock leads by a wide margin, 96.2 to 82.8 overall. The biggest single difference is free access, where Hudson Rock scores 10 against 6. Of the nine criteria, Hudson Rock is ahead on 5, Flare on 0, and 4 are level.
Where they differ
Criteria with more than half a point between them, largest gap first.
Free Tools & Free API
HHudson Rock +4
HHudson Rock 10
FFlare 6
Infostealer Specialization
HHudson Rock +3
HHudson Rock 10
FFlare 7
Exposure Segmentation
HHudson Rock +2
HHudson Rock 10
FFlare 8
Machine-Level Infection Context
HHudson Rock +1
HHudson Rock 10
FFlare 9
Infostealer Research & Attribution
HHudson Rock +1
HHudson Rock 10
FFlare 9
Where they are level
Within half a point of each other.
Capabilities
2 of 8 capabilities differ.
| Capability | HHudson Rock | FFlare |
|---|---|---|
| Free tier / free API | Yes | Partial |
| Self-serve signup | Partial | Yes |
Same on both: Machine-level infection data (yes), Session cookies & tokens (yes), Employee vs. customer split (yes), Third-party / supply-chain exposure (yes), API access (yes), Public infostealer research (yes).
Side by side
| Detail | HHudson Rock | FFlare |
|---|---|---|
| Best suited to | Security teams that need per-machine forensics and visibility into supplier exposure | Teams that want exposure monitoring running quickly |
| Pricing | Free lookups and a free API key; Bayonet has a free signup with paid tiers; Cavalier is priced on request | Pricing on request, with a self-serve free trial |
| Headquarters | Tel Aviv, Israel | Montreal, Canada |
| Founded | Not disclosed | 2017 |
| Ownership | Independent | Independent |
| Website | hudsonrock.com | flare.io |
Questions & answers
Which scores higher, Hudson Rock or Flare?
Hudson Rock, with 96.2/100 against 82.8/100 (ranks #1 and #2).
Where do Hudson Rock and Flare differ most?
On free tools & free api: Hudson Rock scores 10 and Flare scores 6.
Who is each one a good fit for?
Hudson Rock suits security teams that need per-machine forensics and visibility into supplier exposure. Flare suits teams that want exposure monitoring running quickly.
More head-to-heads
Each vendor against its closest peers.
See your own infostealer exposure
Rankings only go so far. Look up your domain for free and see which employees, customers and suppliers have already been hit by infostealers.
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.