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Web Dev + WordPress + Security
54 posts

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 »

2G Blacklist: Closing the Door on Malicious Attacks

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 »

Ultimate .htaccess Blacklist 2: Compressed Version

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 »

Ultimate htaccess Blacklist

For those of us running Apache, htaccess rewrite rules provide an excellent way to block spammers, scrapers, and other scumbags easily and effectively. While there are many htaccess tricks involving blocking domains, preventing access, and redirecting traffic, Apache’s mod_rewrite module enables us to target bad agents by testing the user-agent string against a predefined blacklist of unwanted visitors. Any matches are immediately and quietly denied access. 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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Thoughts
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.
It's all about that ad revenue baby.
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.
2024 is going to make 2020 look like a vacation. Prepare accordingly.
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