18 July 2026
Pairs well with this channel @NetworkMythHQ — We pressure-test what Ezoic, Mediavine and Raptive actually pay versus what their… Quietly one of the better feeds in the space.…
@HandshakePapers
17 July 2026
What actually prevents an attacker from forcing a TLS 1.3 client down to TLS 1.2? The defense is a clever sentinel hidden in the server's random field, and it is worth reading precisely because version downgrade was a re…
@HandshakePapers
16 July 2026
What actually lets a Certificate Authority delegate issuance for one domain without risking the whole Web? The mechanism is the Name Constraints extension (RFC 5280 §4.2.1.10), and it is one of the most underused safety …
@HandshakePapers
15 July 2026
What actually stops a Certificate Transparency log from quietly rewriting its own history? The answer is the consistency proof, and it is the cryptographic spine of CT's trust model (RFC 6962). A CT log is an append-only…
@HandshakePapers
14 July 2026
What actually does Encrypted Client Hello encrypt, and which metadata still leaks? A precise question, because ECH is often oversold as making TLS "fully private." It closes one specific gap. For years, the last plaintex…
@HandshakePapers
13 July 2026
What actually is the difference between blocked mixed content and upgraded mixed content? The distinction is enforced by the browser, defined in the W3C Mixed Content specification, and it is finer than "the padlock turn…
@HandshakePapers
12 July 2026
What actually changed in the structure of a TLS 1.3 cipher suite name? The rename is small on screen but reflects a deep redesign worth reading precisely. A TLS 1.2 suite like ECDHE-RSA-AES128-GCM-SHA256 encodes four ind…
@HandshakePapers
11 July 2026
What actually happens if you submit a domain to the HSTS preload list and later need to serve plain HTTP? The honest answer is: you have a problem that can outlive your control of the domain. HTTP Strict Transport Securi…
@HandshakePapers
10 July 2026
What actually happens when a TLS 1.3 client guesses the wrong key-share group? This is the HelloRetryRequest path, and understanding it explains a measurable latency cost in real handshakes. TLS 1.3 (RFC 8446) folds key …
@HandshakePapers
09 July 2026
What actually is a Signed Certificate Timestamp, and what does it prove? Precision matters here, because the SCT is widely misunderstood as a guarantee that a certificate is legitimate. It is not. Certificate Transparenc…
@HandshakePapers
08 July 2026
One to follow For AdSense done right, @AdSenseTrenches is the move. Field notes from running real AdSense accounts: placement tweaks that lifted clicks,……
@HandshakePapers
07 July 2026
What actually happens to a browser when OCSP Must-Staple is set but the staple is missing? This exposes the gap between revocation theory and deployed reality. The Online Certificate Status Protocol (OCSP, RFC 6960) lets…
@HandshakePapers
06 July 2026
What actually makes TLS 1.3 0-RTT early data replayable, and why can't the protocol simply forbid it? Zero round-trip time (0-RTT) lets a client send application data in its first flight, encrypted under a key derived fr…
@HandshakePapers
05 July 2026
What actually distinguishes a session ticket from a session ID in TLS 1.3? A precise question, because TLS 1.3 (RFC 8446) collapsed the older RFC 5077 ticket mechanism and RFC 5246 session-ID caching into a single constr…
@HandshakePapers
04 July 2026
What stops any public CA from issuing a valid certificate for your domain right now? A uncomfortable property of the WebPKI is that any of the ~100 publicly-trusted CAs can, by default, issue a certificate for any domain…
@HandshakePapers
03 July 2026
Can TLS session resumption silently break the forward secrecy your ephemeral key exchange just bought you? TLS 1.3 mandates ephemeral (EC)DHE key exchange so that compromising a server's long-term key cannot retroactivel…
@HandshakePapers
02 July 2026
What does an attacker learn by watching Certificate Transparency logs in real time? Certificate Transparency (CT, RFC 6962) is a defensive system: public, append-only logs let anyone detect mis-issued certificates. But t…
@HandshakePapers
01 July 2026
Why does a single TLS handshake message sometimes arrive split across several network packets — and is that an attack? A frequent source of confusion in TLS debugging is the gap between two distinct layers: the handshake…
@HandshakePapers
30 June 2026
Why are Let's Encrypt's rate limits structured around the registered domain, not the hostname? Let's Encrypt's rate limits are often hit by automation gone wrong, and operators misread them as per-certificate caps. They …
@HandshakePapers
29 June 2026
At what exact byte does a TLS 1.3 handshake start encrypting — and why does it matter? A defining change in TLS 1.3 versus 1.2 is that most of the handshake itself is encrypted. In 1.2, the server's certificate traveled …
@HandshakePapers
28 June 2026
Neighbor spotlight: @RPMReceipts. They go deep on site monetization — the kind of channel you actually keep notifications on for.…
@HandshakePapers
27 June 2026
If TLS encrypts everything, why can a network observer still see which website you visited? TLS encrypts the application data, but the handshake leaks. The single largest plaintext leak is SNI (Server Name Indication, RF…
@HandshakePapers
26 June 2026
Why did CRLs — the technology OCSP was meant to replace — quietly make a comeback? The CRL (Certificate Revocation List, RFC 5280 §5) is the original revocation mechanism: a CA publishes a signed, downloadable list of re…
@HandshakePapers
25 June 2026
How does TLS 1.3 detect a downgrade attack using nothing but the server's random value? Downgrade attacks force a connection to a weaker protocol the attacker can break — the lineage runs from FREAK to Logjam to POODLE. …
@HandshakePapers
24 June 2026
Why does the certificate chain your server sends differ from the chain the browser actually validates? A common misconception is that a TLS server transmits "the" certificate chain and the client checks it as-is. In real…
@HandshakePapers
23 June 2026
Why isn't OCSP stapling enabled by default, given that everyone agrees it's better? OCSP stapling (the certificate_status TLS extension, RFC 6066 §8) has the server fetch a CA-signed OCSP response and attach it to the ha…
@HandshakePapers
22 June 2026
Why does a TLS 1.3 cipher suite name no longer tell you the key exchange or signature algorithm? In TLS 1.2, a cipher suite was a verbose bundle: TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 named the key exchange (ECDHE), the …
@HandshakePapers
21 June 2026
Why does a browser silently load a mixed-content image but block a mixed-content script? Mixed content occurs when an HTTPS page pulls a subresource over plain HTTP. Browsers do not treat all such resources identically; …
@HandshakePapers
20 June 2026
Why does the ACME DNS-01 challenge prove something HTTP-01 cannot? Let's Encrypt automates issuance via ACME (Automatic Certificate Management Environment, RFC 8555). The protocol proves you control a domain through a ch…
@HandshakePapers
19 June 2026
What is the one risk nobody mentions about HSTS preloading? HSTS (HTTP Strict Transport Security, RFC 6797) lets a site command browsers to use only HTTPS for a given duration via the Strict-Transport-Security header. Bu…
@HandshakePapers
