April 30, 2026

The Microsoft 365 tenant you set up in 2018 is now a liability.

Almost every small business runs on a Microsoft 365 or Google Workspace tenant that someone set up years ago and never touched again. It works, so nobody questions it. But "it works" and "it’s secure" are different statements, and the gap between them is where most incidents begin.

What a review usually finds

  • Multi-factor authentication enabled for some accounts but quietly skipped for executives and partners.
  • Mailbox forwarding rules nobody remembers creating — sometimes pointing to outside addresses.
  • Former employees with accounts that were never disabled, still licensed and still reachable.
  • Email authentication (SPF, DKIM, DMARC) half-configured, leaving your domain easy to spoof.
  • No tested backup of mail and files — only an assumption that the cloud "handles it."

The fix is discipline, not spend

None of these problems require new products. They require a documented baseline, a periodic review, and someone accountable for the configuration. A fixed-price tenant review is the fastest way to see what an attacker would see first — and to turn a tenant that merely works into one you can actually trust.

The Microsoft 365 tenant you set up in 2018 is now a liability. | Skylance Systems