This is quite scary: "Researchers have found a vulnerability in Android devices that allows hackers to access a device remotely without
the owner ever knowing it was compromised. The flaw affects roughly 95 percent of Android devices running operating system version
2.2 to 5.1"

http://venturebeat.com/2015/07/27/researchers-find-vulnerability-that-affects-95-of-android-devices/

"A newly discovered security bug in a widely used piece of Linux software, known as "Bash," could pose a bigger threat to computer users than the "Heartbleed" bug that surfaced in April, cyber experts warned on Wednesday. Bash is the software used to control the command prompt on many Linux computers. Hackers can exploit a bug in Bash to take complete control of a targeted system, security experts said. The Department of Homeland Security's United States Computer Emergency Readiness Team, or US-CERT, issued an alert saying the vulnerability affected Unix-based operating systems including Linux and Apple Inc's Mac OS X"

http://www.nbcnews.com/tech/security/new-bash-bug-could-pose-bigger-threat-heartbleed-n211006