Nostra
Run by Nostra
How to detect Nostra
Nostra signs its requests, so you detect it by verifying the cryptographic signature on each request. A valid signature proves the request came from Nostra; a copied user agent without the signature does not.
- Detection method
- SignedThe agent signs its requests, so its identity is verified cryptographically.
- Signals that identify it
- CryptographicA signed request verified cryptographically
- BehavioralHow the session clicks, types, moves and navigates, checked after the signature is verified
Every signal Verisoul checks for Nostra
Nostra signs its requests, so we verify who it is cryptographically, then check the rest of the session.
- Used
Cryptographic
A signed request verified cryptographically
- Not used
Network
Not needed to identify it
- Not used
Device
Not needed to identify it
- Used
Behavioral
How the session clicks, types, moves and navigates, checked after the signature is verified
How often you'll see it
Very uncommon
Rare, brand new, or not seen on Verisoul traffic yet
Questions about Nostra
How do you detect Nostra?
Nostra signs its requests, so you detect it by verifying the cryptographic signature on each request. A valid signature proves the request came from Nostra; a copied user agent without the signature does not.
What is Nostra?
Nostra is a crawler run by Nostra that signs its requests.
Does Nostra identify itself?
Yes. Nostra signs its requests cryptographically, which is the strongest way an agent can identify itself.
Can a bot pretend to be Nostra?
Not convincingly. A bot can copy Nostra's user agent, but without Nostra signing keys its requests fail verification and it is not labeled Nostra.
How common is Nostra?
Very uncommon. Rare, brand new, or not seen on Verisoul traffic yet.
What does the Verisoul API return for Nostra?
Every session Verisoul identifies as Nostra carries an agent block with id "nostra", name, provider, type "crawler", detection_method "signed" and the detection_signals used (cryptographic, behavioral). Build rules on the id, type and detection method.