Server Disaster Recovery: How to Restore a Broken Linux Server from Raw Backup

In enterprise systems engineering, system failures are not a question of if, but when. Hardware storage array failures, botched kernel updates, catastrophic filesystem corruption, malicious ransomware attacks, or accidental administrative commands (such as a misdirected rm -rf) can take an entire production server offline in seconds. When disaster strikes, having a collection of unverified backup … Read more

How to Set Up Two-Factor Authentication (2FA) for WordPress, cPanel and SSH

Over 80% of all data breaches and server hijacking incidents stem from compromised, reused, or brute-forced passwords. In an era where automated stealer malware extracts browser-stored credentials and corporate database dumps leak billions of cleartext passwords onto underground hacker forums, relying on a password alone to secure your hosting infrastructure is catastrophic negligence. Two-Factor Authentication … Read more

How to Analyze Nginx & Apache Access Logs to Detect SQL Injection & Exploit Probes

Web server access logs contain a complete chronological ledger of every single HTTP request received by your server. In the aftermath of a security breach, or as part of routine blue-team threat hunting, your access logs hold the vital forensic evidence needed to determine how an attacker gained access, what files were exfiltrated, and which … Read more

How to Configure Content Security Policy (CSP) Headers to Stop XSS Attacks

Cross-Site Scripting (XSS) consistently ranks among the most prevalent and damaging web application vulnerabilities. If an attacker succeeds in injecting malicious JavaScript into your website (via unescaped comment forms, vulnerable search bars, or compromised third-party plugins), they can steal session cookies, capture credit card data via keylogging, and redirect visitors to phishing portals. Traditional server … Read more

How to Prevent XML-RPC and REST API Brute Force Attacks on WordPress

While traditional brute-force attacks target the visual WordPress login page at /wp-login.php, modern botnets rarely waste bandwidth on browser forms. Instead, automated attack tools exploit programmatic APIs: the legacy XML-RPC interface (xmlrpc.php) and the modern WordPress REST API (/wp-json/wp/v2/users). By leveraging XML-RPC’s system.multicall method, an attacker can submit up to 1,000 username and password guesses … Read more

How to Block Bad Bots, AI Scrapers and Content Scrapers at the Server Level

In the modern web ecosystem, malicious automated bots and aggressive AI crawlers account for more than 45% of all internet traffic. Uncontrolled scrapers like GPTBot, ClaudeBot, CCBot, Bytespider, and headless Puppeteer scripts aggressively crawl websites 24/7, harvesting proprietary editorial content, product pricing catalogs, and intellectual property to train commercial Large Language Models. More critically, these … Read more

How to Set Up Proper File & Directory Permissions for WordPress and Nginx

Improper file and directory permissions are responsible for more than half of all WordPress security breaches and administrative headaches on Linux servers. When inexperienced administrators encounter an “Upload folder is not writable” or “403 Forbidden” error, many resort to executing chmod -R 777 /var/www/ in frustration. This single action is catastrophic: 777 grants read, write, … Read more

CrowdSec vs Fail2ban: Which Intrusion Prevention System Protects Servers Better?

Every public Linux server connected to the internet is bombarded by automated botnets within minutes of receiving a public IPv4 address. Vulnerability scanners probe SSH port 22 for default root passwords, brute-force WordPress /wp-login.php, and scan Nginx logs for phpMyAdmin or .env file leaks. Leaving a server unshielded against brute-force attacks results in elevated CPU … Read more

How to Configure ModSecurity OWASP Core Rule Set on Nginx & OpenLiteSpeed

While network firewalls like UFW or iptables filter traffic at the IP address and port layer, they are blind to application-layer HTTP payloads. An attacker can easily pass through port 443 to execute SQL injection attacks, Remote Code Execution (RCE), or cross-site scripting (XSS) against unpatched web applications and WordPress plugins. To defend production websites … Read more

How to Clean a Hacked WordPress Website Step-by-Step (Malware Removal Guide)

Discovering that your WordPress website has been compromised is every site owner’s worst nightmare. Google displays a bright red warning label stating “This site may be hacked” or “Deceptive site ahead”, web browsers block visitor access, search rankings plummet overnight, and spam redirect scripts hijack legitimate visitors to malicious gambling or phishing domains. When panic … Read more