A research experiment on whether a VPN can be inferred from network traffic alone (TCP/TLS fingerprint), without IP-reputation databases.
We look at the low-level shape of the connection you just made to this page — TCP options (MSS/TTL), TLS ClientHello fingerprint (JA3/JA4), User-Agent and timestamp — and store them only if you consent, together with your IP and your optional answers below. Data auto-deletes after 30 days. You get an ID to delete it sooner. See the privacy notice.
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