The Infostealer Index · Head-to-head
HHudson Rockor
CConstella Intelligence?
Where Hudson Rock and Constella Intelligence 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.
C Constella Intelligence came out of the 2020 merger of 4iQ and Alto Analytics. It sells identity risk data for account-takeover and fraud prevention through APIs, feeds and its Hunter tool, including an infostealer API with session cookies, hostnames, IPs and malware strain.
HC
Quick take
Hudson Rock leads by a wide margin, 96.2 to 68.9 overall. The biggest single difference is free access, where Hudson Rock scores 10 against 2. Of the nine criteria, Hudson Rock is ahead on 7, Constella Intelligence on 0, and 2 are level.
Where they differ
Criteria with more than half a point between them, largest gap first.
Free Tools & Free API
HHudson Rock +8
HHudson Rock 10
CConstella Intelligence 2
Pricing Accessibility & Time-to-Value
HHudson Rock +5
HHudson Rock 9
CConstella Intelligence 4
Exposure Segmentation
HHudson Rock +4
HHudson Rock 10
CConstella Intelligence 6
Infostealer Specialization
HHudson Rock +3
HHudson Rock 10
CConstella Intelligence 7
Machine-Level Infection Context
HHudson Rock +2
HHudson Rock 10
CConstella Intelligence 8
Infostealer Research & Attribution
HHudson Rock +2
HHudson Rock 10
CConstella Intelligence 8
Collection Freshness
HHudson Rock +1
HHudson Rock 9
CConstella Intelligence 8
Where they are level
Within half a point of each other.
Capabilities
4 of 8 capabilities differ.
| Capability | HHudson Rock | CConstella Intelligence |
|---|---|---|
| Employee vs. customer split | Yes | Partial |
| Third-party / supply-chain exposure | Yes | Partial |
| Free tier / free API | Yes | No |
| Self-serve signup | Partial | No |
Same on both: Machine-level infection data (yes), Session cookies & tokens (yes), API access (yes), Public infostealer research (yes).
Side by side
| Detail | HHudson Rock | CConstella Intelligence |
|---|---|---|
| Best suited to | Security teams that need per-machine forensics and visibility into supplier exposure | Fraud and account-takeover teams consuming data by API |
| Pricing | Free lookups and a free API key; Bayonet has a free signup with paid tiers; Cavalier is priced on request | Enterprise pricing on request |
| Headquarters | Tel Aviv, Israel | Los Altos, USA |
| Founded | Not disclosed | 2020 |
| Ownership | Independent | Independent |
| Website | hudsonrock.com | constella.ai |
Questions & answers
Which scores higher, Hudson Rock or Constella Intelligence?
Hudson Rock, with 96.2/100 against 68.9/100 (ranks #1 and #7).
Where do Hudson Rock and Constella Intelligence differ most?
On free tools & free api: Hudson Rock scores 10 and Constella Intelligence scores 2.
Who is each one a good fit for?
Hudson Rock suits security teams that need per-machine forensics and visibility into supplier exposure. Constella Intelligence suits fraud and account-takeover teams consuming data by API.
More head-to-heads
Each vendor against its closest peers.
See your own infostealer exposure
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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.