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Web Dev + WordPress + Security
86 posts related to: Heavy Scans for Low-Hanging Fruit

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

[ 3G Stormtroopers (Deep Purple) ]

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

[ 3G Stormtroopers (Green Machine) ]

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

[ 3G Stormtroopers (Blue Dream) ]

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 »

Three Unsolved WordPress Mysteries

After several years of using WordPress, I have at least three unanswered questions: What’s up with the WordPress PHP Memory Error? Why do certain phrases trigger 403 “Forbidden” errors when saving or publishing posts? What happened to the Plugin Pages in the WordPress Codex? Let’s have a look at each one of these baffling mysteries.. Continue reading »

Custom HTTP Errors via htaccess

We all know how important it is to deliver sensible, helpful 404 error pages to our visitors. There are many ways of achieving this functionality, including the well-known htaccess trick used to locally redirect users to custom error pages: # htaccess custom error pages ErrorDocument 400 /errors/400.html ErrorDocument 401 /errors/401.html ErrorDocument 403 /errors/403.html ErrorDocument 404 /errors/404.html ErrorDocument 500 /errors/500.html ..and so on. These directives basically tell Apache to deliver the designated documents for their associated error types. Many webmasters and […] Continue reading »

2G Blacklist: Closing the Door on Malicious Attacks

[ 2G Blacklist ]

Since posting the Ultimate htaccess Blacklist and then the Ultimate htaccess Blacklist 2, I find myself dealing with a new breed of malicious attacks. It is no longer useful to simply block nefarious user agents because they are frequently faked. Likewise, blocking individual IP addresses is generally a waste of time because the attacks are coming from a decentralized network of zombie machines. Watching my error and access logs very closely, I have observed the following trends in current attacks: Continue reading »

Improve Site Performance by Increasing PHP Memory for WordPress

During the recent ASO server debacle, I raced frantically to restore functionality to Perishable Press. Along the way, one of the many tricks that I tried while trying to fix the dreaded “white screen of death” syndrome involved increasing the amount of PHP memory available to WordPress. This fix worked for me, but may not prove effective on every installation of WordPress. If you are unsure as to whether or not you need to increase your PHP memory, consult with […] Continue reading »

Advanced PHP Error Handling via PHP

In my previous articles on PHP error handling, I explain the process whereby PHP error handling may be achieved using htaccess. Handling (logging, reporting) PHP errors via htaccess requires the following: Continue reading »

Advanced PHP Error Handling via htaccess

In my previous article on logging PHP errors, How to Enable PHP Error Logging via htaccess, we observed three fundamental aspects of preventing, preserving, and protecting your site’s PHP errors. Continue reading »

Yahoo! Slurp in My Blackhole (Yet Again)

Yup, ‘ol Slurp is at it again, flagrantly disobeying specific robots.txt rules forbidding access to my bad-bot trap, lovingly dubbed the “blackhole.” As many readers know, this is not the first time Yahoo has been caught behaving badly. This time, Yahoo was caught trespassing five different times via three different IPs over the course of four different days. Here is the data recorded in my site’s blackhole log (I know, that sounds terrible): Continue reading »

A Dramatic Week Here at Perishable Press..

..And we’re back. After an insane week spent shopping for a new host, dealing with some Bad Behavior, and transferring Perishable Press to its new home on a virtual private server (VPS), everything is slowly falling back into place. Along the way, there have been some interesting challenges and many lessons learned. Here are a few of the highlights.. Continue reading »

Site News: Bad Behavior Spasm, Switching to New VPS Server..

Hello! As many of you already know, the popular WordPress anti-spam plugin, Bad Behavior, caused some problems yesterday, and as a result many bloggers and users were locked out of their favorite sites, including this one. As for now, the problem seems to be fixed, however, the experience of being locked out of my own site has left a rather unpleasant taste in my mouth. Needless to say, I will be reconsidering the continued use of Bad Behavior as a […] Continue reading »

5 Easy Ways to Syntax Highlight PHP Code

[ Screenshot: PHP code snippet in syntax-highlighted form ]

A great to way to share your PHP code with visitors is to display it directly in the browser with automatically generated syntax highlighting. Here is a screenshot showing an example of syntax-highlighted PHP code: Displaying your PHP scripts in syntax-highlighted form is an excellent way to share source code details directly with your readers. Rather than zipping the script and requiring users to download, unzip, and open the file in an editor, displaying your code directly saves you and […] Continue reading »

Stupid htaccess Trick: Enable File or Directory Access to Your Password-Protected Site

In this brief tutorial, we are going to enable users to access any file or directory of a site that is password-protected via htaccess. There are many reasons for wanting to employ this technique, including: Share public resources from an otherwise private site Enable visitors to access content during site maintenance Testing and formatting of layout and design during development As a webmaster, I have used this technique on several occasions. This trick works great for allowing access to any […] Continue reading »

Yahoo! in my Blackhole

Okay, I realize that the title sounds a bit odd, but nowhere near as odd as my recent discovery of Slurp ignoring explicit robots.txt rules and digging around in my highly specialized bot trap, which I have lovingly dubbed “the blackhole”. What is up with that, Yahoo!? — does your Slurp spider obey robots.txt directives or not? I have never seen Google crawling around that side of town, neither has MSN nor even Ask ventured into the forbidden realms. Has […] Continue reading »

Ultimate .htaccess Blacklist 2: Compressed Version

[ Image: Lunar Eclipse ]

In our original htaccess blacklist article, we provide an extensive list of bad user agents. This so-called “Ultimate htaccess Blacklist” works great at blocking many different online villains: spammers, scammers, scrapers, scrappers, rippers, leechers — you name it. Yet, despite its usefulness, there is always room for improvement. 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 »
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Crazy that we’re almost halfway thru 2024.
I live right next door to the absolute loudest car in town. And the owner loves to drive it.
8G Firewall now out of beta testing, ready for use on production sites.
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Note to self: encrypting 500 GB of data on my iMac takes around 8 hours.
Getting back into things after a bit of a break. Currently 7° F outside. Chillz.
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