
Hi @michal ,
For SharePoint, you can rely on its information protection. And you can perform data protection by setting different Permissions in the site.
Regarding the data security issues you mentioned in the file uploading process, this is related to your network environment.
Generally speaking, if your network environment is clean, the firewall is turned on, the official anti-virus software is used, and the software is updated regularly, the chances of data security problems will be greatly reduced.
If you still want to know more detailed information, it is recommended that you open a ticket to contact Microsoft for more direct help, thanks for your understanding.
(Microsoft 365 admin center ->> Support ->> New service request)
Thanks,
Yanli Jiang
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