What Good Identity Hardening Looks Like

MFA is the starting line. Attackers can steal credentials and session tokens, abuse trusted devices, or slip through forgotten MFA exceptions, so identity security needs layers beyond one login control.

One exception can become the way in. Enforce MFA for every account, including executives and administrators, and give every necessary exception a named owner and expiration date.

Good identity hardening stays enforced. Use device and location requirements, remove stale accounts and unnecessary admin rights, block legacy authentication, and limit access from places your business doesn't operate.

Detection closes the gap prevention can't. Watch for unusual sign-ins, risky app consent, and stolen-session activity so attackers don't get to blend in as a legitimate employee.

Treat identity hardening as an ongoing program. Review configuration drift, high-risk changes, privileged access, and exceptions regularly, then track the fixes and evidence of progress over time.

Acknowledgments: Special thanks to Aimee Simpson and Scott Riley for their contributions to this write-up.

Attackers don't really need to break into your business anymore. They can just log in as you instead. Maybe they bought a valid set of your credentials off the dark web for a few dollars. Maybe they tricked you into pasting a command into a dialog box. Maybe your session token leaked out of a browser cache. Either way, there's no need to break in when they can walk through the front door with a completely legitimate identity.

Most teams think they've handled security once multi-factor authentication (MFA) is turned on, but that's just the start. Identity hardening means every control protecting an identity, a device, a session, or an app stays enforced, gets monitored continuously, and keeps pace as attackers change tactics. Here's what that actually looks like in practice, and where to start.