Overly broad permissions can turn one compromised account into a much larger security problem. Learn how to reduce unnecessary access, review privileges, and apply least privilege across modern Linux systems. Review Linux Privileges×
In the first half of 2009, over three-quarters of web sites with malicious code were found to be legitimate sites that had been compromised. Recent widespread attacks such as NineBall and Gumblar were blamed for injecting malware into sites on a huge scale.