By Johannes Ullrich NTP Vulnerability for X-Mas; US Cert releases SONY IOCs; German Steel mill damaged by malware
NTP Vulnerability
https://isc.sans.edu/forums/diary/Which+NTP+Servers+do+You+Need+to+Patch/19095/
https://isc.sans.edu/forums/diary/Critical+NTP+Vulnerability+in+ntpd+prior+to+428/19093/
US-Cert Technical Analysis of SONY Compromise
https://www.us-cert.gov/ncas/alerts/TA14-353A
German Steel Mill Damaged By Malware
http://www.itworld.com/article/2861675/cyberattack-on-german-steel-factory-causes-massive-damage.html
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