Cybersecurity articles covering SSL certificates, HTTP security headers, password safety, data breaches and auditing your own site.
What Is RSA?RSA (Rivest–Shamir–Adleman) is one of the first and most widely-used public key cryptography algorithms. It enables secure communication…
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Why Password Hashing Matters When users create passwords, you should never store the raw password in your database. If your database is ever breached, attackers will have every user's password in plai
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What Is a JWT?A JSON Web Token (JWT) is a compact, URL-safe way to transmit information between two parties as a digitally signed JSON object. They are widely…
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Why HTTP Security Headers Matter HTTP security headers are directives your web server sends with every response that tell browsers how to behave. They prevent XSS attacks, clickjacking, protocol downg
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What Is a Port Scanner? A port scanner sends connection requests to TCP ports on a host and records which ones respond. Open ports indicate active services. Check your server: Port Scanner Which Ports
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What Happens When Your SSL Certificate Expires? The moment your SSL certificate expires, every visitor to your website sees a bright red warning page: "Your connection is not private." Most visitors i
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What Is an IP Blacklist?An IP blacklist (also called a DNSBL — DNS-based Blackhole List) is a real-time database of IP addresses known to send spam, host…
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What Is a Cryptographic Hash?A cryptographic hash function takes any input — a word, a sentence, or a 10GB video file — and produces a fixed-length…
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Anyone can send an email that appears to come from your domain. Without the right DNS records in place, a scammer can craft a message that looks exactly like…
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