What steps should I take to prevent these apparent hacking attempts?
74743
How to harden an SSH server?
139438
Hacked Site - SSH to remove a large body of javascript from 200+ files
49813
How can I minimize the chances of my game getting pirated?
67097
What should I do if I accidentally put sensitive data onto Github?
134312
Why can I get a virus or trojan from visiting a website?
141486
How to protect from ARP spoofing
46422
How can I prevent spam on sites which I control?
45013
How do I find if there is a rogue DHCP server on my Network?
131043
Off-site harassment by an SE user
121501
How can I prevent McAfee Security Scan from being installed, bundled with other apps?
68470
Someone is duplicating/reproducing my site what can I do?
90057
How to prevent code/program access to web application?
124123
How do I prevent identity spoofing in a multiplayer game?
18927
Too many password attempts
113101
What is the danger of running untrusted software as a normal user
14929
.NET obfuscation tools/strategy
74188
How can I avoid SQL injection attacks in my ASP.NET application?