The concern is over a critical software vulnerability in a program known as log 4 j. firms like google, amazon and ibm all use the software. it's used in apple's cloud computing services and in the popular video game minecraft. to join us now to discuss the risks and challenges, alan liska. i don't understand what this means. what do you mean by vulnerability in the software? how does this impact regular folks at home? >> sure. so log 4 j is a library. think of it like a plug-in that other software uses to manage system logs. when you connect into a website or play minecraft or whatever, compa...