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Why Your MQTT TLS Connection Fails, Stage by Stage

Why Your MQTT TLS Connection Fails, Stage by Stage

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6 min read
The certificate our partner rotated without telling anyone

The certificate our partner rotated without telling anyone

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2 min read
Python's smtplib doesn't verify TLS certificates by default

Python's smtplib doesn't verify TLS certificates by default

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3 min read
In April, banking was the least post-quantum-ready sector we measured. It is now second from the top.

In April, banking was the least post-quantum-ready sector we measured. It is now second from the top.

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4 min read
The finding was correct and eight weeks late

The finding was correct and eight weeks late

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4 min read
SSL Certificate Name Mismatch: NET::ERR_CERT_COMMON_NAME_INVALID

SSL Certificate Name Mismatch: NET::ERR_CERT_COMMON_NAME_INVALID

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7 min read
Stop saying SSL: TLS only does three jobs, and your 'SSL cert' is usually not the outage

Stop saying SSL: TLS only does three jobs, and your 'SSL cert' is usually not the outage

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3 min read
SSL Certificate Problem: Unable to Get Local Issuer Certificate

SSL Certificate Problem: Unable to Get Local Issuer Certificate

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7 min read
The Kafka Incident That Was Just a Certificate (And the Operator That Saved MirrorMaker)

The Kafka Incident That Was Just a Certificate (And the Operator That Saved MirrorMaker)

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7 min read
NET::ERR_CERT_AUTHORITY_INVALID: When the Root Itself Is Not Trusted

NET::ERR_CERT_AUTHORITY_INVALID: When the Root Itself Is Not Trusted

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8 min read
ERR_SSL_PROTOCOL_ERROR: When the Handshake Fails Before the Certificate

ERR_SSL_PROTOCOL_ERROR: When the Handshake Fails Before the Certificate

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8 min read
Only 18.5% of the web is open. What an audit of 24,898 sites tells scraper engineers

Only 18.5% of the web is open. What an audit of 24,898 sites tells scraper engineers

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12 min read
⚙️From 4 Hours to 3 Minutes: Automating GCP Ingress Provisioning with Ansible

⚙️From 4 Hours to 3 Minutes: Automating GCP Ingress Provisioning with Ansible

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2 min read
Cosa succede davvero quando clicchi un link (in Chrome)

Cosa succede davvero quando clicchi un link (in Chrome)

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4 min read
Automatic HTTPS on Kestrel in 2026, now that LettuceEncrypt is archived

Automatic HTTPS on Kestrel in 2026, now that LettuceEncrypt is archived

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2 min read
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