May 2, 2026 · Information Security

Common Security Configuration Issues Ops Engineers Face During Grade‑Protection Remediation

This article walks operations engineers through the most frequent security‑configuration problems encountered during Grade‑Protection (等保) remediation, detailing the regulatory background, specific compliance gaps, step‑by‑step remediation commands for Linux systems, verification methods, FAQs, and a practical implementation workflow.

AuditdGrade ProtectionLinux Hardening

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Common Security Configuration Issues Ops Engineers Face During Grade‑Protection Remediation

Java Backend Technology

Apr 2, 2018 · Information Security

How a Hidden Cron Job Hijacked My Server and How I Fixed It

A production server running Tomcat, MySQL, MongoDB and ActiveMQ was taken down by a malicious cron job that executed a cryptomining script, and the article walks through the investigation, removal, and hardening steps to fully recover and secure the system.

Linux HardeningServer Securitycron job

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How a Hidden Cron Job Hijacked My Server and How I Fixed It