Attackers impose a high price on your limited resources. We look at some ways to separate the good from the bad.

Practical cryptography is often an encounter with many random numbers in just a few moments. Entropy is the raw material that gives birth to the random number, but it’s harder to come by than you might think.

Leroy Robert “Satchel” Paige, the iconic athlete-philosopher who was probably the greatest baseball pitcher of all time, used to pass around this insightful list of “Rules for Staying Young”:

Windows 7 is pretty good at logging, but what do you do with all those log files? We look at some monitoring tools that can help you get the most out your logging data.

Who’s device is it? Just because you bought it doesn’t mean you can look inside. But the Internet has plenty of resources for jailbreakers.