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Reducing Disk Load in High-Traffic PHP Applications: Switching from SQLite to Redis for Anti-Crawler Storage
Automated crawlers and scraping bots are a growing problem for modern websites. While search engine bots are useful, many other crawlers generate excessive traffic, scrape content, or overload servers. To help website owners control this type of traffic, we recently released the Anti-Crawler PHP Library by CleanTalk, an open-source tool designed to detect and limit
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Why CAPTCHA Falls Short and How CleanTalk Helps
Why CAPTCHA Falls Short and How CleanTalk Helps CAPTCHA used to feel clever — until it started blocking real users.If you’re looking for a CAPTCHA alternative that protects your WordPress site without frustrating visitors, this article explains how CleanTalk does it differently. According to Baymard Institute, traditional CAPTCHA can reduce form completion rates by up…
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Our Investigation of the Hack of One Website (OR: How We Investigated a Hack of One Website)
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We were contacted by one WordPress website owner with the issue of a website hack. Consequences of the hack were that their whole website content was deleted, meaning articles, pictures, plugins and themes were gone and visiting the website displayed a blank page. What was left in the folder «wp-content» was a single folder «uploads»,…
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Security Update: Please Update CleanTalk Anti-Spam to the Latest Version
We’re reaching out to let you know about a security vulnerability that was recently disclosed in the CleanTalk Anti-Spam plugin for WordPress. We’ve already released a fix, and we want to make sure you’re protected. What happened? On February 14, 2026, a vulnerability (CVE-2026-1490) was publicly disclosed affecting CleanTalk Anti-Spam plugin versions 6.71 and earlier.…
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wpForo Forum – Spam Protection
CleanTalk added spam protection for wpForo Forum multi-layout bulletin board using direct form integration. So in case, you prefer using wpForo be sure to use the most effective Anti-Spam plugin. Read the guide below and learn 4 steps to protect your wpForo Forms from spam. Once the CleanTalk Anti-Spam plugin is installed it starts to…
