What have we learnt today about the WannaCry ransomware attack, what you should do.

1. do not block the URL KILLSWITCH - This will stop the spread in your network.

2. Make sure your Anti-Virus Definitions are up to date. 30% of Vendors had definitions updated by end of play Friday 15th May. This will stop trojan exeuting.

3. Patch Risky OS first e.g. Windows 2003 and XP, there are PATCHES available! - This will stop the payload exploit getting into the server.

4. Patch Windows 7, 8, 10, 2008, 2012 and 2016.  Check for a Security Rollup since March 2017.