For what it is worth, a recent article on nas security:
www.backblaze.com
There is nothing new in the article, it just refers to the synology knowledgebase and their own backup service. But it may refresh someones mind on actions to take.

Recent QNAP and Synology Security Alerts: How to Protect Your NAS
NAS devices have become the target of ransomware over recent years, and it’s important to protect these devices. Learn how you can protect your NAS today.

There is nothing new in the article, it just refers to the synology knowledgebase and their own backup service. But it may refresh someones mind on actions to take.