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Web Dev + WordPress + Security
Tag: botnet
3 posts

Block Random String Comment Spam

Recently WordPress sites have been getting hammered with random-string comment spam. The attackers are clever, using random text strings for every vector except the payload, which usually is the URL used for the comment’s Name link. But for these weird comment spams, the apparent payload is the email address. It’s the only part of the comment that’s not made up of random gibberish. Continue reading »

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 »

Protect Against Brute-force/Proxy Login Attacks

For the past week, I’ve been monitoring activity from a set of IP addresses involved with brute-force login attacks. Brute-force login attacks involve systematic guessing of passwords using various common usernames such as “admin” and “username”. So for example, an attack will target an array of sites, use “admin” as the username, and then make numerous attempts at “guessing” your password. And to obfuscate their malicious activity, the attack is executed from multiple IP addresses, either via proxy or possibly […] Continue reading »

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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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