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How to disable SMBv1 in Windows 10 and Windows Server

Disable SMBv1 to prevent prevent Petya / NotPetya, WannaCry / WanaCrypt0r ransomware spreading through your network. These worm viruses exploit a vulnerability in Windows Server Message Block (SMB) version 1 (SMBv1), and spread like wildfire. It is urged you disable SMBv1 in your Windows variant (Windows 10, 8.1, Server 2016, 2012 R2), and here is how if you haven’t done so yet.

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Check WordPress Core files integrity

Verify WordPress Core files md5 checksums against WordPress’ checksums API, using this standalone PHP file. I chose to use a standalone PHP script to check the md5sum of WordPress Core files against the API so you’re not dependent on a possibly hacked WordPress installation. This kind of guarantees the result can be trusted, as opposed to using a WordPress plugin. I think this is a better integrity check of WordPress Core files.

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Intrusion Detection with Windows Event ID’s

Found via cyber-ir.com: This paper is the best I have ever read on how to build IOC’s with Windows Event ID’s. I highly recommend you to read it, it contains very useful information and some very interesting behavioural examples of attacker activity. If you are looking to enhance your detection in your core network this is the document!

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WordPress advisory: Akal premium theme XSS vulnerability

Over the course of one week I had the opportunity to audit two hacked WordPress websites. I could quickly discover two vulnerabilities: a Cross Site Scripting, or XSS, in a premium WordPress theme Akal, and a Denial-of-Service in an undisclosed newsletter plugin. This post describes the Akal premium WordPress theme XSS vulnerability.

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“How we broke PHP, hacked Pornhub and earned $20,000”

This is a very interesting read on how Dario Weißer (@haxonaut), cutz and Ruslan Habalov (@evonide) were able to find a PHP unserialize bug to exploit and gain remote code execution on Pornhub. Pornhub’s bug bounty program is at Hackerone In stead of actively attacking Pornhub, they took another road and attacked what Pornhub is built upon: PHP.

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SSL in WordPress: how to move WordPress to HTTPS? The definitive guide

Having an SSL certificate in your WordPress is the de-facto standard nowadays, did you know that? Google ranks sites having HTTPS higher in their SERP. But in WordPress, how do you configure an SSL certificate and HTTPS URL? You’ll learn the important steps to move WordPress from http to https in this post.

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Cracking PHP rand()

Sjoerd Langkemper writes about Cracking PHP rand(): Webapps occasionaly need to create tokens that are hard to guess. For example for session tokens or CSRF tokens, or in forgot password functionality where you get a token mailed to reset your password. These tokens should be cryptographically secure, but are often made by calling rand() multiple times and transforming the output to a string. This post will explore how hard it is to predict a token made with rand().


This is a very interesting read about how PHP rand() works, and how to attack & crack it. The post ends with the following conclusion:

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Deny vulnerable WordPress plugins using Windows Server File Server Resource Manager’s File Screens

Using Windows Server File Server Resource Manager‘s File Screens you can block vulnerable WordPress plugins from being uploaded to your IIS web server. In the following example, you’ll learn how to block WP DB Backup plugin system-wide on Windows Server, read on…

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Add a delay to your WordPress login form

Or why *not* to add a delay … !

It is important to protect your WordPress website from brute-force attacks, and various security plugins exist in doing so. For the purpose of this article, I modified the WordPress Login Delay plugin with a fixed delay of three seconds for my wp-login.php page. This provides you with an easy to use method of protecting your WordPress login form (but do read the caveats!).

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My WordPress web.config

Do you host your WordPress website on Windows Server IIS? And are you having trouble with your web.config? I often receive questions about how to use a web.config file in WordPress on Windows Server, and which settings are important for a WordPress site. Maybe it’s because I’m a WordPress on Windows Server IIS enthusiast, so here is my web.config for your convenience (really, it’s not that special).

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