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Web Dev + WordPress + Security

WordPress Plugin: Disable WP Robots

Disable WP Robots

WordPress 5.7 features a new Robots API that provides filter-based control over the robots meta tag. So if your site is running WordPress 5.7 or better, you will notice a new <meta /> tag included in the <head></head> section of your web pages. By default, the meta tag added by WordPress has a value of max-image-preview:large, which is fine IF it is the only robots meta tag on the page. If your site already has its own meta robots tag, […] Continue reading »

About the Auto-Generated WP Sitemaps and How to Disable Using Simple Code or a Free Plugin

WordPress Plugin: Disable WP Sitemaps

WordPress 5.5 and beyond features built-in sitemaps that are enabled by default. For new users and sites this may be a good thing. Now users don’t have to bother with thinking about how to implement a sitemap. Like with Privacy control, WordPress just does it for you automagically. BUT for the millions of sites that already have a sitemap thanks to any of the excellent and free sitemap plugins — that’s like maybe 5–10 million websites — well congratulations you […] Continue reading »

All the little .txt files you can put in the root directory of your website

The ones I know of: ads.txt humans.txt robots.txt security.txt This site makes use of robots.txt and humans.txt. I don’t need ads.txt because 3rd-party ads aren’t currently running on the site, and security.txt seems not necessary as the site’s contact form is easy enough for anyone to find. Continue reading »

How to Fix _blank Target Vulnerability

[ _blank Target Vulnerability ]

In this article, I am reposting part of my recent tutorial, WordPress and the Blank Target Vulnerability. That post is aimed at WordPress specifically, however most of the article applies to HTML in general. So the tutorial below explains how to fix all “blank target” links, regardless of whether or not WordPress is involved. Continue reading »

X Theme Leftover Code Snippets

While working on the site’s 24th redesign, I ended up with about 10 code snippets that were awesome but ultimately not needed. So rather than just delete these tasty functions, I am posting them here for future reference. Who knows, during the next site update I may decide to implement or repurpose some of these techniques. And of course sharing is caring, so feel free to use any of these code snippets in your own projects. Check out the Table […] Continue reading »

WordPress and the Blank Target Vulnerability

[ WP Visual/RTE Insert Link Dialog ]

For those who haven’t yet noticed, WordPress now adds rel="noopener" attributes for any external links added via the link Quicktag in the Visual/RTE. So if you enable the option, “Open link in a new tab”, WordPress automatically will add the rel noopener attribute to the link. This is to protect against CORS and other exploits that take advantage of blank-target links. It’s a smart move that may escape many in the WordPress community. So in an effort to help foster […] Continue reading »

Blackhole for Bad Bots – Quick Start

[ Black Hole (Figurative) ]

Welcome to the Quick Start Guide for the standalone PHP version of Blackhole for Bad Bots. This post basically is a condensed summary of the original Blackhole tutorial. So if you are new to the concept of blocking bad bots, check out the original tutorial. Otherwise, for those that are familiar, the following guide should simplify things and help you get started with Blackhole as quickly as possible. Continue reading »

Worst IPs: 2016 Edition

[ Worst IPs: 2016 Edition ]

A little late this year, but following tradition here is my list of the absolute worst IP addresses from 2016. All in nice numerical order for easy crunching. These IPs are associated with all sorts of malicious activity, including exploit scanning, email harvesting, brute-force login attacks, referrer spam, and everything in between. Really obnoxious stuff that degrades your site’s performance and potentially threatens security. Continue reading »

WordPress Plugin: Blackhole Pro

[ Blackhole Pro ]

Announcing the Pro version of my WordPress security plugin, Blackhole for Bad Bots. Like the free version, Blackhole Pro protects your site against bad bots, spammers, scrapers, scanners, and other automated threats. This increases site security and saves precious server resources for your legit visitors. It’s time to say “bye bye” to bad bots. Continue reading »

WordPress Plugin: Prismatic

[ Prismatic ]

I’ve been using other plugins to display my code at Perishable Press, Plugin Planet, DigWP, and WP-Mix for years now. The other plugins have done the job, but there are things that I’ve always wanted to change. For example, syntax highlighting. I use syntax highlighting for code snippets at WP-Mix, but not on any of my other sites. So I wanted to combine clean, time-tested code escaping with stylish syntax highlighting. After sharing well over 1,000 code snippets online, I […] Continue reading »

Lynda.com Course: Developing Secure WordPress Sites

[ WordPress: Developing Secure WordPress Sites ]

After months of preparation and production, my new video course on developing secure WordPress sites is now available at Lynda.com. This is my second video course on securing WordPress; the first one was originally launched in 2011 and remained in Lynda’s library for over five years. I received a lot of great feedback on the course, and so I jumped on the opportunity to do another one. If there is one thing that I enjoy doing, it’s helping people with […] Continue reading »

How to Block Baidu Bot

[ Baidu Search Engine ]

A user of my 6G Firewall recently asked how to block the “baidu” bot from accessing their site. This post explains why Baidu is not blocked in 6G and provides a quick .htaccess technique to deny it (or anything claiming to be it) access to your site. Continue reading »

WordPress Plugin: Blackhole for Bad Bots

[ Blackhole for Bad Bots ]

Image Courtesy NASA/JPL-Caltech. Update: Pro version now available! Check out Blackhole Pro » Finally translated my Blackhole Spider Trap into a FREE WordPress plugin. It’s fun, fast, flexible, and works silently behind the scenes to protect your WordPress-powered site from malicious bots. Here are some of the features: Continue reading »

s2member notes

I use s2member (free version) and s2member Pro on a few of my sites. Have been for several years now. Over the course of time, I have amassed a healthy collection of notes, code snippets and techniques for customizing default functionality, adding features, and so forth. Gonna post the collection online for the benefit of any others who may be seeking for similar modifications and/or related information. Continue reading »

Integrating Google No Captcha reCaptcha In WordPress Forms

Google No Captcha reCaptcha

In this tutorial you will learn how to integrate Google’s new reCatcha model in WordPress Login, Comment, Registration and Lost Password Forms. Continue reading »

Category Functions for WordPress

[ Downtown Seattle WA 2012 ]

My previous theme sports the now-infamous colorized categories, which aim to help visitors navigate featured content. In addition to the colors, featured categories display contextually relevant navigation, popular posts, and related tags. It’s a great way to improve organization and get more of your content in front of the visitor. To make it happen, a variety of tasty WordPress code snippets are used, including versatile theme functions that enable getting the first category link, displaying sub-categories of the current category, […] Continue reading »

Welcome
Perishable Press is operated by Jeff Starr, a professional web developer and book author with two decades of experience. Here you will find posts about web development, WordPress, security, and more »
Banhammer: Protect your WordPress site against threats.
Thoughts
Making great strides on my new book. Planned release in December :)
To organize my life, I keep it simple. online: plain text files, offline: sticky notes.
Official list of Googlebot IP addresses.
Lot of 1s in today’s date 20211111.
Working on a new book :)
I enjoy listening to original Star Trek and NG episodes while working online. After a while it feels like I’m working on the ship as part of the crew, going on adventures.
New version (2.6) of my shapeSpace starter theme now available! Always free & open source for everyone :)
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