New Bookstore! Save 20% on books with discount code: LAUNCH
Web Dev + WordPress + Security
Month: May 2008
14 posts

Blacklist Candidate Number 2008-05-31

Welcome to the Perishable Press “Blacklist Candidate” series. In this post, we continue our new tradition of exposing, humiliating and banishing spammers, crackers and other worthless scumbags.. Just under the wire! Even so, this month’s official Blacklist-Candidate article may be the last monthly installment of the series. Although additional BC articles may appear in the future, it is unlikely that they will continue as a regular monthly feature. Oh sure, I see the tears streaming down your face, but think […] Continue reading »

CSS Hackz Series: PNG Fix for Internet Explorer

In this CSS Hackz Series article, I outline several solutions for displaying alpha-transparent PNG (a.k.a. PNG–24 format) images in everybody’s favorite broken browser, Internet Explorer. Specifically, IE versions through 6 (excluding IE 5 for Mac) fail to support alpha-channel transparency for PNG images. In these versions of IE, every pixel containing alpha-transparency is displayed with an ugly, flat gray color. Fortunately, there are plenty of hacks and workarounds designed to “fix” IE’s PNG image-display problem. Unfortunately, every currently available solution […] Continue reading »

Consolidate and Localize Your WordPress Feeds

Recently, I found occasion to consolidate and localize my WordPress feeds. A couple of years ago, shortly after I first began using Feedburner to deliver and monitor my site’s feeds, I began listing my Feedburner-assigned feed URL in addition to my localized WordPress feed URL. As time went on, inconsistent feed linkage here at Perishable Press had greatly convoluted the feed-subscription process. Continue reading »

Series Summary: Building the 3G Blacklist

In the now-complete series, Building the 3G Blacklist, I share insights and discoveries concerning website security and protection against malicious attacks. Each article in the series focuses on unique blacklist strategies designed to protect sites transparently, effectively, and efficiently. The five articles culminate in the release of the next generation 3G Blacklist. Here is a quick summary of the entire Building the 3G Blacklist series: Continue reading »

Perishable Press HTAccess Spring Cleaning, Part 1

While developing the 3G Blacklist, I completely renovated the Perishable Press site-root and blog-root HTAccess files. Since the makeover, I have enjoyed better performance, fewer errors, and cleaner code. In this article, I share some of the changes made to the root HTAccess file and provide a brief explanation as to their intended purpose and potential benefit. In sharing this information, I hope to inspire others to improve their own HTAccess and/or configuration files. In the next article, I will […] Continue reading »

Improve Security by Protecting .htaccess

As you know, HTAccess files are powerful tools for manipulating site performance and functionality. Protecting your site’s HTAccess files is critical to maintaining a secure environment. Fortunately, preventing access to your HTAccess files is very easy. Let’s have a look.. Continue reading »

CSS Hackz Series: Minimum Width, Maximum Width for Internet Explorer 6

Opening the CSS Hackz series is the infamous CSS-expression hack for achieving minimum and maximum widths in Internet Explorer 6. Here is how to set the maximum width for IE 6: #target_element { width: expression((document.body.clientWidth > 778)? “777px” : “auto”); max-width: 777px; } Here is how to set the minimum width for IE 6: #target_element { width: expression((document.body.clientWidth < 335)? “333px” : “auto”); min-width: 333px; } Continue reading »

WordPress Tip: Update Email Address in the WordPress Database

Several months ago, I changed my email address to stop spam. Since then, I have been updating every instance of my old address that I can find. In WordPress, I edited all of my theme files and updated my profile information in the “Users” admin area. Several days later while digging through the comments table in the WordPress database, I realized that the user-profile update is only pro-actively effective. There were still hundreds of instances of my old email address […] Continue reading »

Perishable Press 3G Blacklist

After much research and discussion, I have developed 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. Over time, these mega-lists 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 by […] Continue reading »

Building the 3G Blacklist, Part 5: Improving Site Security by Selectively Blocking Individual IPs

In this continuing five-article series, I share insights and discoveries concerning website security and protecting against malicious attacks. Wrapping up the series with this article, I provide the final key to our comprehensive blacklist strategy: selectively blocking individual IPs. Previous articles also focus on key blacklist strategies designed to protect your site transparently, effectively, and efficiently. In the next article, these five articles will culminate in the release of the next generation 3G Blacklist. Continue reading »

Building the 3G Blacklist, Part 4: Improving RedirectMatch in the Original 2G Blacklist

In this continuing five-article series, I share insights and discoveries concerning website security and protecting against malicious attacks. In this fourth article, I build upon previous ideas and techniques by improving the directives contained in the original 2G Blacklist. Subsequent articles will focus on key blacklist strategies designed to protect your site transparently, effectively, and efficiently. At the conclusion of the series, the five articles will culminate in the release of the next generation 3G Blacklist. Continue reading »

Building the 3G Blacklist, Part 3: Improving Security by Blocking Rogue User Agents

In this continuing five-article series, I share insights and discoveries concerning website security and protecting against malicious attacks. In this third article, I discuss targeted, user-agent blacklisting and present an alternate approach to preventing site access for the most prevalent and malicious user agents. Subsequent articles will focus on key blacklist strategies designed to protect your site transparently, effectively, and efficiently. At the conclusion of the series, the five articles will culminate in the release of the next generation 3G […] Continue reading »

Building the 3G Blacklist, Part 2: Improving Security by Preventing Query-String Exploits

In this continuing five-article series, I share insights and discoveries concerning website security and protecting against malicious attacks. In this second article, I present an incredibly powerful method for eliminating malicious query string exploits. Subsequent articles will focus on key blacklist strategies designed to protect your site transparently, effectively, and efficiently. At the conclusion of the series, the five articles will culminate in the release of the next generation 3G Blacklist. Improving Security by Preventing Query String Exploits A vast […] Continue reading »

Building the 3G Blacklist, Part 1: Improving Security by Exploiting Server Attack Patterns

In this series of five articles, I share insights and discoveries concerning website security and protecting against malicious attacks. In this first article of the series, I examine the process of identifying attack trends and using them to immunize against future attacks. Subsequent articles will focus on key blacklist strategies designed to protect your site transparently, effectively, and efficiently. At the conclusion of the series, the five articles will culminate in the release of the next generation 3G Blacklist. Improving […] 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 »
BBQ Pro: The fastest firewall to protect your WordPress.
Thoughts
LOL @ “weekly” support: “Your request has been received and will be reviewed soon. Neil (your support guy) checks support requests weekly. Rest assured we’ll get to it!” — Gotta be kidding with this.
After several days of work, finally taking a break. If anyone needs me, I'll be in Zora’s Domain, working thru Mah Eliya shrine.
Never ever call the client a useless idiot. Even if it’s true.
Inevitable that Google shuts down Feedburner. Maybe this year? Who knows. Here is a nice summary plus alternatives.
There is no way that Marvel can serve up anything better than what they've already done with Infinity saga/Endgame. Knowhere to go but down, sadly.
I built a new search launchpad to make my life easier. So I can search multiple engines quickly and easily.
Updating all muh plugins for WP 5.5 imminent release! Wut August :)
Newsletter
Get news, updates, deals & tips via email.
Email kept private. Easy unsubscribe anytime.