Most of the system manager tend to be absent during the strings of holidays.There might be the case that the damage of cyber attack will be expanded in case the incident (cyber attack etc) occurred. Please carry out the Information Ssecurity measure in your PC and your server referring to the Referance before the strings of holidays.

Also, please check the system again to cope with the incident without system manager. In case incident occurred,please contact immediately based on the Contact guidebook for unauthorized access to computer.

References：
JPCERT/CC
Making provision for the strings of holidays April 2015

IPA
Caution concerning the Information security in the strings of holidays

IIMC. Kyoto University
Contact guidebook for unauthorized access to computer （Limited on-campus）