Our Brisbane site has advised network engineers will conduct essential upgrades to the routing network in the Brisbane facilities to increase capacity and redundancy. This will be completed in two maintenance windows.

Impact: While every effort will be made to avoid visible downtime, all services at this site may experience disruption for up to 10 minutes during each window, including added latency or packet loss while routing changes occur.

Schedule:
Start time: Jan 19, 01:00 AEDT Estimated duration 4 hours.
Start time: Jan 20, 01:00 AEDT Estimated duration 4 hours

If you need additional advice or support for services impacted by this work, please let us know.

There is a recent vulnerability reported for log4j:

https://logging.apache.org/log4j/2.x/security.html

You can read more about that on articles like https://www.wired.com/story/log4j-flaw-hacking-internet/

Log4J is a library used by java applications for logging.

If you have installed it, it would be best to update it to a newer version.  Applications may depend on a particular version of the library, so it would be best to involve your developers in this change.

A command that may help find log4j related files is:
find / -type f 2>/dev/null | grep log4j