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Web Dev + WordPress + Security
140 posts related to: Tools to check your site’s health

Best Practices for Error Monitoring

Given my propensity to discuss matters involving error log data (e.g., monitoring malicious behavior, setting up error logs, and creating extensive blacklists), I am often asked about the best way to go about monitoring 404 and other types of server errors. While I consider myself to be a novice in this arena (there are far brighter people with much greater experience), I do spend a lot of time digging through log entries and analyzing data. So, when asked recently about […] Continue reading »

4G Series: The Ultimate Referrer Blacklist, Featuring Over 8000 Banned Referrers

You have seen user-agent blacklists, IP blacklists, 4G Blacklists, and everything in between. Now, in this article, for your sheer and utter amusement, I present a collection of over 8000 blacklisted referrers. Shortcut: skip the article and jump to Disclaimer and Download » Referrer Spam Sucks For the uninitiated, in teh language of teh Web, a referrer is the online resource from whence a visitor happened to arrive at your site. For example, if Johnny the Wonder Parrot was visiting the […] Continue reading »

4G Series: The Ultimate User-Agent Blacklist, Featuring Over 1200 Bad Bots

[ Image: Inverted Eclipse ]

As discussed in my recent article, Eight Ways to Blacklist with Apache’s mod_rewrite, one method of stopping spammers, scrapers, email harvesters, and malicious bots is to blacklist their associated user agents. Apache enables us to target bad user agents by testing the user-agent string against a predefined blacklist of unwanted visitors. Any bot identifying itself as one of the blacklisted agents is immediately and quietly denied access. While this certainly isn’t the most effective method of securing your site against […] Continue reading »

The Perishable Press 4G Blacklist

[ 4G Stormtrooper ]

At last! After many months of collecting data, crafting directives, and testing results, I am thrilled to announce the release of the 4G Blacklist! The 4G Blacklist is a next-generation protective firewall that secures your site against a wide range of automated attacks and other malicious activity. Continue reading »

Yahoo! Slurp too Stupid to be a Robot

I really hate bad robots. When a web crawler, spider, bot — or whatever you want to call it — behaves in a way that is contrary to expected and/or accepted protocols, we say that the bot is acting suspiciously, behaving badly, or just acting stupid in general. Unfortunately, there are thousands — if not hundreds of thousands — of nefarious bots violating our sites every minute of the day. For the most part, there are effective methods available enabling […] Continue reading »

Building the Perishable Press 4G Blacklist

[ Building the Hoover Dam, Part 1 ]

Last year, after much research and discussion, I built a concise, lightweight security strategy for Apache-powered websites. Prior to the development of this strategy, I relied on several extensive blacklists to protect my sites against malicious user agents and IP addresses. Unfortunately, these mega-lists eventually became unmanageable and ineffective. As increasing numbers of attacks hit my server, I began developing new techniques for defending against external threats. This work soon culminated in the release of a “next-generation” blacklist that works […] Continue reading »

Deadly Killer

Priceless.. Continue reading »

Better Image Caching with CSS

[ CSS3 ]

I have written previously on the fine art of preloading images without JavaScript using only CSS. These caching techniques have evolved in terms of effectiveness and accuracy, but may be improved further to allow for greater cross-browser functionality. In this post, I share a “CSS-only” preloading method that works better under a broader set of conditions. Previous image-preloading techniques target all browsers, devices, and media types. Unfortunately, certain browsers do not load images that are hidden directly (via the <img […] Continue reading »

The Halving Method

Working a great deal with blacklists, I am frequently trying to isolate and identify problematic code. For example, a blacklist implementation may suddenly prevent a certain type of page from loading. In order to resolve the issue, the blacklist is immediately removed and tested for the offending directive(s). This situation is common to other coding languages as well, especially when dealing with CSS. Identifying problem code is more of an art form than a science, but fortunately, there are a […] Continue reading »

Perfect WordPress Title Tags Redux

In my previous article on WordPress title tags, How to Generate Perfect WordPress Title Tags without a Plugin, We explore everything needed to create perfect titles for your WordPress-powered site. After discussing the functionality and implementation of various code examples, the article concludes with a “perfect” title-tag script that covers all the bases. Or so I thought.. Some time after the article had been posted, Mat8iou chimed in with a couple of ways to improve thie script by cleaning up […] Continue reading »

Valid, SEO-Friendly Post Translation Links

Ever wanted to provide automatic language translations of your web pages without installing another plugin? Here is a valid, SEO-friendly technique that takes advantage of Google’s free translation service. All you need is a PHP-enabled server and you’re good to go. Just copy and paste the following code into the desired location in your page template and enjoy the results. Once in place, this code will produce translation links for eight common languages for every page on your site. Grab, […] Continue reading »

Custom OpenSearch for Your Website

I recently added OpenSearch functionality to Perishable Press. Now, OpenSearch-enabled browsers such as Firefox and IE 7 alert users with the option to customize their browser’s built-in search feature with an exclusive OpenSearch-powered search option for Perishable Press. The autodiscovery feature of supportive browsers detects the custom search protocol and enables users to easily add it to their collection of readily available site-specific search options. Now, users may search the entire Perishable Press domain with the click of a button. […] Continue reading »

Save Bandwidth by Serving jQuery, MooTools, Prototype via Google’s AJAX Libraries API

A great way to save bandwidth is to take advantage of Google’s AJAX Libraries API to serve your favorite open-source JavaScript libraries. Here is how Google explains it in their official documentation: The AJAX Libraries API is a content distribution network and loading architecture for the most popular open source JavaScript libraries. By using the google.load() method, your application has high speed, globally available access to a growing list of the most popular JavaScript open source libraries. Continue reading »

Yahoo! Lies about Obeying Robots.txt Directives

There are two possibilities here: Yahoo!’s Slurp crawler is broken or Yahoo! lies about obeying Robots directives. Either case isn’t good. Slurp just can’t seem to keep its nose out of my private business. And, as I’ve discussed before, this happens all the time. Here are the two most recent offenses, as recorded in the log file for my blackhole spider trap: Continue reading »

IE6 Support Spectrum

IE6 Support Spectrum

I know, I know, not another post about IE6! I actually typed this up a couple of weeks ago while immersed in my site redesign project. I had recently decided that I would no longer support that terrible browser, and this tangential post just kind of “fell out.” I wasn’t sure whether or not to post it, but I recently decided to purge my draft stash by posting everything for your reading pleasure. Thus, you may see a few turds […] Continue reading »

How to Deal with IE 6 after Dropping Support

As announced at IE Death March, I recently dropped support for Internet Explorer 6. As newer versions of Firefox, Opera, and Safari (and others) continue to improve consistency and provide better support for standards-based techniques, having to carry IE 6 along for the ride — for any reason — is painful. Thanks to the techniques described in this article, I am free to completely ignore (figuratively and literally) IE 6 when developing and designing websites. 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 »
WP Themes In Depth: Deep dive into WP theme development.
Thoughts
LinkedIn decided to replace my popular video course on WordPress security. For a limited time the course is available to *logged-in* users via direct URL.
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 :)
Finished updating all of my books! As always, book owners can download the latest versions for FREE :)
W3C.org has a very thorough list of accessibility tools.
The more you wake up, the more you realize you are still asleep.
7G Firewall v1.4 now available!
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