This document contains a Twitter post from @nsom providing security best practices for end-users, including keeping personal firewalls turned on, updating operating systems, using antivirus software, setting strong passwords, being wary of downloading files and clicking links in emails. It also lists 10 unnecessary services that can be disabled in Windows XP like IIS, Netmeeting and Remote Desktop to enhance security. The post credits information sources like Microsoft, Symantec and Tech Republic.