By Johannes B. Ullrich, Ph.D. Backup Files Are Good if They are Outside Your Web Servers Document Root
https://isc.sans.edu/forums/diary/Backup+Files+Are+Good+but+Can+Be+Evil/21935/
Exploiting Apache Server Status
http://blog.mazinahmed.net/2017/01/exploiting-misconfigured-apache-server-status-instances.html
WhatsApp “Backdoor” Controversy
https://www.theguardian.com/technology/2017/jan/13/whatsapp-backdoor-allows-snooping-on-encrypted-messages
https://whispersystems.org/blog/there-is-no-whatsapp-backdoor/
Hardening Windows 10
https://blogs.technet.microsoft.com/mmpc/2017/01/13/hardening-windows-10-with-zero-day-exploit-mitigations/
Injecting JavaScript Into PDFs
http://insert-script.blogspot.in/2016/10/pdf-how-to-steal-pdfs-by-injecting.html
More Here