Sucuri Malware Research Team
Sucuri
Unraveling Authentication and Authorization in Web Security
Kyle Knight What’s the difference between authentication and authorization, and why do so many breaches slip through the gap between them? Authentication proves who someone is. Authorization…
Mastering WordPress File Permissions: A Guide for All Levels
Originally published: July 17, 2024 by Rianna MacLeod WordPress file permissions are the rules your server uses to decide who can read, write, and execute…
Vulnerability & Patch Roundup — October 2026
If you operate a website, you’re already aware that a single unpatched vulnerability can render your site inaccessible, compromise your reputation, or necessitate extensive remediation…
What Is Phishing? Recognizing and Preventing Attacks
Phishing is an attack in which someone impersonates a person or organization you trust, like your host, registrar, bank, or colleague, in order to steal…
Critical PHP Security Update: Two RCE Flaws (CVE-2026-109618, CVE-2026-109619)
Two critical PHP vulnerabilities (CVE-2026-109618 and CVE-2026-109619) can allow unauthenticated attackers to execute code on affected web servers. Both carry a CVSS v4.0 score of…
HTTP 401 Unauthorized: What It Means and How to Fix It
You load your site, or visit an API endpoint your app relies upon, and instead of a page you find a brief, unhelpful message: 401…
500 Internal Server Error: What It Means and How to Fix It
You load your own site, and instead of your homepage you get a blank page with a line of text reading 500 Internal Server Error.…
What Is Encryption? How It Protects Your Website and Its Data
If you run a website, you’ve already met encryption even if you’ve never used the word. It’s the 🔒 padlock in the browser bar, the reason…
Is My Site Hacked? (13 Signs)
Originally published: February 23, 2023 by Rianna MacLeod Is my site hacked? Most people don’t ask that out of nowhere — something already looks off.…
How to Prevent SSH Brute Force Login Attacks
Originally published: April 20, 2023 by Rianna MacLeod An SSH brute force attack is an automated login-guessing run against your server’s remote access service, and…
Vulnerability & Patch Roundup — September 2026
If you operate a website, you’re already aware that a single unpatched vulnerability can render your site inaccessible, compromise your reputation, or necessitate extensive remediation…