Oh yeah I can vouch for this, many malicious sites are hosted on Microsoft's own servers like onedrive. There's not much you can do in terms of IP blocking or

Oh yeah I can vouch for this, many malicious sites are hosted on Microsoft's own servers like onedrive. There's not much you can do in terms of IP blocking or domain blocking when microsoft is hosting the malicious webpages from MS servers. It's a challenging issue.