In this edition of Week in security, Tony looks at these topics:

• The discovery of Log4Shell, a critical vulnerability in a ubiquitous Java-based logging library called Log4j, and the implications it has for countless products and services in use today.
• Why business leaders should take immediate steps towards checking their systems for the use of Log4j and applying the patch that addresses the security flaw.
• Also this week, ESET researchers wrapped up their series of articles dissecting the most active Latin American banking trojans of the past few years.

All this – and more – on WeLiveSecurity.com. Connect with us on Facebook, Twitter, LinkedIn and Instagram.