Akin HTTP request fingerprint
b11cun040_00050012_cfad16f7
Seen 2026-02-16 to 2026-10-20 across the retained window.
The feed is a URL your firewall, MISP or SIEM polls; it needs a free account so it can be revoked. Or watch the top network: AS53667 sends an email when it next hits a sensor.
2
Source IPs
2
Networks
2
Countries
2
Ports hit
20
Events
1
IPs / network
This fingerprint is spread thinly across many networks, which is the shape of a common, widely-used client.
Top networks
Countries
Ports targeted
What it requests
User agents claimed
Fingerprint family: 9 shapes, 150 IPs, 2.5K events in 30 days
Every shape here is within one request header of the family's largest shape and comes from the same source addresses. One tool, several request shapes; a hashed fingerprint shows these as unrelated.
HTTP/1.1, 5 headers, Content-Length body: accept-encoding, user-agent, content-length, content-type, host
Related fingerprints
Clients whose header set is within two of this one, measured from the tokens themselves.
About this fingerprint
Akin fingerprints an HTTP client from the request head alone: the protocol version, line endings, body framing, which headers are present, and the grammar of the negotiation header values. The User-Agent string and the request path are deliberately excluded, because both are trivially changed and both were measured varying within a single operator, so a scanner that rotates either keeps one fingerprint. The middle section is a presence bitmap rather than a hash, so two tokens can be compared directly to see how many headers the clients differ by.