Computers detect every action of the user and create a time-stamped documented of events which are called Log files. In large companies, lots of log files created daily and this causes log aggregation which can be defined as the arrangement between large volumes of computer based log messages, such as audit records, event-logs, etc.
Log aggregation contains lots of important and detailed data which can reach hundreds of gigabytes per day in large organizations. This data also contains all the alteration that done remotely. Therefore log aggregation actually is vital in security because from a decent report done in all the log data; every IP change or share, USB history, VPN connections, unauthorized access, outside or inside hack attempts and etc. can be observed.
Recent researches illustrates that, %80 percent of hack attempts is done by inside users. With a simple logic it can be easily seen that log management is very good way to protect data from inside cyber attacks. With log data the authorized manager can observe every action that have been done by employees thus inside hack attempts can be located and prevented in their network.
Log files are also a very good way to test softwares. Log history helps defining if a reported bug is actually a bug and old log files help analyzing and solving the bugs hence it is a very important step in development stage. In order to reduce the time consumption a good consideration of log files is advised.
Nowadays log management is a very important part of business life. While log management is advised in international standards (ISO 27001) it is also legally obligatory. Log management is a complicated process and organizations often make mistakes while approaching it. With security problems and cyber attacks increasing, every company in the world pay extra attention to log files. Some big enterprises even recruit their own log file specialized employees.