Posts by Lisa Trumbley
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July 02, 2026 •
HOTP (HMAC-Based One-Time Password) is an authentication method defined by RFC 4226 that generates one-time passwords using a shared secret key and an incrementing counter. Unlike TOTP, which uses time-based intervals, HOTP advances each time a token is used. HOTP is widely deployed in hardware tokens used by financial services, government, healthcare, and air-gapped environments. […]
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UK School Phone Ban: What IT Admins Must Know About MFA
June 18, 2026 •
The United Kingdom’s forthcoming statutory phone ban in schools is sending ripples far beyond the classroom. For school IT administrators, the disruption is not just about confiscating handsets at the gate. It strikes at the heart of how staff and students currently authenticate into school networks, applications, and managed devices. If your institution relies on […]
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MFA Integration with Active Directory: The Non-Invasive Approach
May 11, 2026 •
If you manage a Windows environment, Active Directory (AD) is almost certainly the backbone of your identity infrastructure. It controls who accesses what, enforces Group Policy, and authenticates users across your entire organization. But here is the uncomfortable truth: Active Directory was not designed with modern threat actors in mind. Stolen credentials remain the leading […]