Summary:

• **What is SolarWinds?** SolarWinds is a software company that makes tools to help businesses manage their computer networks and systems. A new security problem (called a vulnerability) was found in their software that hackers can use to break into computers and steal information.

• **Why is this dangerous?** When hackers find a weakness in popular software that many companies use, they can attack lots of businesses at the same time. This new SolarWinds problem is being actively used by bad actors to try to break into computer systems, so it's very important for companies to fix it quickly.