Two days ago, email provider VFEmail was hacked (see link). Being hacked isn't surprising. Everyone should assume that they will be hacked. VFEmail had been hacked earlier, and so I assume they had security procedures and backup procedures.
The hackers however didn't try to ransom or steal the data. They deleted everything - primary servers and backup servers - which is just mean. This leads me to assume that the security procedures implement by VFEmail and its systems were not protected in an effective way.
If you are relying solely on a single source for a service, you may want to consider using another service for backups.
Image from Hans from Pixabay.