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 information, redirect a payment, or talk you into an action that helps them. The message is the delivery vehicle, and the goal is always the next action you take.

If you run a website, you’re on both sides of this problem. Your hosting panel, domain registrar, WordPress admin, email, and payment accounts are all valuable targets, and if an attacker gets in through any of them, your site can quietly end up hosting phishing pages aimed at someone else’s customers.

Continue reading What Is Phishing? Recognizing and Preventing Attacks at Sucuri Blog.

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 9.2, and exploitation attempts are already being observed in the wild.

PHP has released the following fixed versions:

PHP branch
Fixed version

PHP 8.5
8.5.12

PHP 8.4
8.4.27

PHP 8.3
8.3.36

PHP 8.2
8.2.35

If you manage your own server or VPS, install the appropriate update immediately.

Continue reading Critical PHP Security Update: Two RCE Flaws (CVE-2026-109618, CVE-2026-109619) at Sucuri Blog.

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 Unauthorized. Sometimes a browser password box appears. Other times, a blank white page presents only that number. In either case, visitors are shut out, and if the error strikes your admin area, even you are left at the threshold.

The good news is that a 401 is one of the more honest HTTP responses.

Continue reading HTTP 401 Unauthorized: What It Means and How to Fix It at Sucuri Blog.

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. No explanation, no stack trace, nothing to act on. For visitors, it looks like the site is simply gone, and for you it usually means the admin area is down too, so the one tool you’d normally reach for is unavailable.

The frustrating part is that a 500 is deliberately vague.

Continue reading 500 Internal Server Error: What It Means and How to Fix It at Sucuri Blog.

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 your host told you to stop using plain FTP, and the checkbox on your backup settings that says “encrypt archive.”

Encryption is one of the few security controls that works quietly and almost never needs your attention, which is exactly why it’s easy to misunderstand. Plenty of site owners install an SSL certificate, see the padlock appear, and assume the site is now “secure.” That’s the gap we want to close here.

Continue reading What Is Encryption? How It Protects Your Website and Its Data at Sucuri Blog.

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 following an attack. Most security breaches we observe originate from automated attacks that exploit known software vulnerabilities, often the same ones that have been previously reported and disclosed.

To assist in maintaining your security posture, we have compiled this month’s summary of essential security updates and vulnerability patches pertinent to the WordPress ecosystem.

Continue reading Vulnerability & Patch Roundup — September 2026 at Sucuri Blog.

In short, WordPress security plugins are tools you add to your site to strengthen your settings, scan for malware, watch for file changes, and block suspicious activity from within WordPress. Most sites should use one, along with a firewall that filters traffic before WordPress even loads. Look for layered protection, good detection, clear handling of false alarms, minimal impact on performance, and real human support.

If you manage a WordPress site, you have probably searched for “best WordPress security plugin” at some point.

Continue reading WordPress Security Plugins: How to Choose the Right One at Sucuri Blog.

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 following an attack. Most security breaches we observe originate from automated attacks that exploit known software vulnerabilities, often the same ones that have been previously reported and disclosed.

To assist in maintaining your security posture, we have compiled this month’s summary of essential security updates and vulnerability patches pertinent to the WordPress ecosystem.

Continue reading Vulnerability & Patch Roundup — August 2026 at Sucuri Blog.

Third-party scripts are common on websites. They help with analytics, ads, live chat, social media, video, payments, and many other features. While not all are risky, every external tag, pixel, widget, or embed adds to your website’s vulnerability. These tools can read page content, collect visitor data, change what users see, and connect with outside services. If a vendor, account, or setup is compromised, it can impact every page that uses the script.

Website owners shouldn’t aim to get rid of useful integrations, but to understand which scripts run, why they are necessary, who controls them, and how to detect unexpected changes.

Continue reading Third-Party Script Security: How Tags, Pixels, and Embeds Can Put Websites at Risk at Sucuri Blog.

Each feature that you add to a website results in a new element that has to be managed.

The credentials are accepted by a login page, the data by a contact form, new code is introduced by a plugin, and an API is used to connect your website to another service. It is also possible that an old staging site or a forgotten backup may still be accessible from the internet.

The collection of these exposed components constitutes your website attack surface.

Continue reading What Is a Website Attack Surface? A Beginner’s Guide to Reducing Risk at Sucuri Blog.

2026: the year the tools learned to hack

In May 2026, OpenAI began testing an internal research model against a cybersecurity benchmark called ExploitGym. While the test environment was not supposed to have access to the open internet, there was, however, one narrow path out because the agents still needed a way to install software: an internally hosted Artifactory server that acted as a cache for package downloads. That pathway turned out to be enough for the model’s agents to eventually circumvent the test’s rules and escape confinement.

Continue reading The Illusion of a Lock – How AI is changing the speed and scale of hands-on WordPress vulnerability research. at Sucuri Blog.

Running a website means a single unpatched vulnerability can take it offline, harm your reputation, or require cleanup. Most compromises begin with automated attacks exploiting known software flaws, usually reported and disclosed already.

To keep you protected from these threats, we’ve compiled this month’s key security updates and vulnerability patches for the WordPress ecosystem.

If you’re already using the Sucuri Firewall, you’re protected. These vulnerabilities are virtually patched for all clients.

Continue reading Vulnerability & Patch Roundup — July 2026 at Sucuri Blog.

Running a website means a single unpatched vulnerability can take it offline, harm your reputation, or require cleanup. Most compromises begin with automated attacks exploiting known software flaws, usually reported and disclosed already.

To keep you protected from these threats, we’ve compiled this month’s key security updates and vulnerability patches for the WordPress ecosystem.

If you’re already using the Sucuri Firewall, you’re protected. These vulnerabilities are virtually patched for all clients.

Continue reading Vulnerability & Patch Roundup — June 2026 at Sucuri Blog.

A working checkout page is often the moment a business starts to feel real. The products are live, the cart is functional, payments are flowing, and orders are landing in your inbox. That is also when security shifts from a background concern to a real-world risk.

Once your website starts accepting credit card payments, it becomes part of a payment environment attackers actively look for.

That does not mean every small ecommerce store needs an enterprise security team.

Continue reading PCI Compliance Isn’t a Checkbox: How to Secure Ecommerce Checkouts Before Attackers Arrive at Sucuri Blog.

If you run a website, you know that a single unpatched vulnerability can take your site offline, damage your reputation, or leave you cleaning up after an attack. Most compromises we see start with automated attacks targeting known software flaws, often the same ones that have already been reported and disclosed.

To help you stay ahead of these threats, we’ve put together this month’s roundup of critical security updates and vulnerability patches affecting the WordPress ecosystem.

Continue reading Vulnerability & Patch Roundup — May 2026 at Sucuri Blog.

Data breach notification letters have become a familiar routine. They usually start with “We value your privacy” and offer a year of free credit monitoring. But the most important part is often hidden in the middle:

A list of what actually got out.

A leaked email address is not a leaked admin password. A hashed credential is not a session token. There is no universal post-breach checklist. The right response depends on the data exposed, so read the notice carefully and match your response to the level of exposure.

Continue reading What to Do When a Third-Party Data Breach Puts Your Website at Risk at Sucuri Blog.

Turning on DNSSEC makes your domain more secure — but if it’s misconfigured, newer certificate validation rules can stop SSL renewals in their tracks.

Hey there,

You know that satisfying click when you finally turn on DNSSEC? It feels like adding a shiny new deadbolt to your domain’s front door. You’re doing the responsible thing: locking down your DNS against spoofing and hijacks, and making the internet just a bit safer.

Continue reading DNSSEC: The Extra Security Layer That Can Break Your Padlock at Sucuri Blog.

Vulnerability reports and responsible disclosures are essential for website security awareness and education. Automated attacks targeting known software vulnerabilities are one of the leading causes of website compromises.

To help educate website owners about potential threats to their environments, we’ve compiled a list of important security updates and vulnerability patches for the WordPress ecosystem this past month.

The vulnerabilities listed below are virtually patched by the Sucuri Firewall and existing clients are protected.

Continue reading Vulnerability & Patch Roundup — April 2026 at Sucuri Blog.

Online gambling spam thrives on dreams of easy money and high stakes. Beating the house at an exotic casino. Splitting sevens. Going all in on the flop. A baccarat dealer calling La grande! For most people, though, the reality falls far short of Monte Carlo and an Aston Martin.

So they turn to online gambling. And bad actors harness that allure to create their scams. They think they’re buying credits at a hot new online casino.

Continue reading What is online gambling spam and what can I do about it? at Sucuri Blog.

Most phishing advice is written for the person staring at a suspicious email. This guide is for the other kind of victim: The website owner whose legitimate site has been quietly turned into the attacker’s weapon.

You didn’t send the message or build the fake login page. You just woke up to a browser warning, a suspended hosting account, or a polite note from someone’s security team asking why your domain is requesting Apple ID credentials.

Continue reading My Website Is Hosting a Phishing Page – Now What? at Sucuri Blog.