Protect
Your IT and security, handled.
A real person who knows your setup answers. Microsoft 365 locked down, backups tested, audit-ready for IRS, FTC and clients.
Request a Security Assessment →Managed IT & Cybersecurity · Houston
Managed IT and cybersecurity for Houston businesses.
We're a Houston IT team that CPA firms, law firms and professional offices call when they can't afford a breach or a failed audit. When your old computers are ready to go, we destroy the data and hand you the proof.
- 5.0 on Google
- CSDS-led
- NIST SP 800-88 Rev. 2
Prefer to talk? 832-582-1668
Destroy
Old computers out. Data gone. Proof in hand.
Locked-bin pickup or on-site destruction following NIST SP 800-88 Rev. 2, and a certificate listing every serial number.
Schedule a Secure Pickup →Private AI · New
AI for your team. Data stays in your office.
A ChatGPT-style assistant on a server you own. Runs fully offline. First installs begin November 2026.
Join Private AI early access →- MBE certifiedNMSDC
- i-SIGMA memberSecure data destruction
- CSDS-ledCertified Secure Destruction Specialist
- NIST SP 800-88 Rev. 2Aligned media sanitization
One partner for the whole data lifecycle
Most firms use one company for IT and another to dispose of old hardware. We do both, so nothing falls through the gap.
- Managed IT
Managed IT services
Managed IT for Houston CPA, law, property management and professional services firms. Devices, Microsoft 365, backup and help desk under one plan.
Learn more about Managed IT services → - Cybersecurity
Cybersecurity services
Cybersecurity for Houston professional firms: managed detection and response, email security, training and compliance support from a cybersecurity-first MSP.
Learn more about Cybersecurity services → - Data destruction
Data destruction
Houston data destruction following NIST SP 800-88 Rev. 2: office pickup, verified wiping or shredding, and a certificate listing every serial number.
Learn more about Data destruction →
From first login to certificate of destruction
- 01
Secure every login
MFA, Microsoft 365 hardening and email security from day one.
- 02
Protect every device
Managed, patched and monitored laptops and servers, with tested backups.
- 03
Prove every disposal
Destruction following NIST SP 800-88 Rev. 2 guidelines, with a certificate for each retired device.
Find your gaps before an auditor does
A free IT & security assessment: we review your devices, Microsoft 365, backups and policies, then give you a plain-English action list.
Built for firms that handle client data
What clients say
5.0 on Google · 5 reviews
★★★★★
"Calvin was so patient and solved several problems that I have struggled with for a month. He is professional but warm and great to work with. I highly recommend Calvin Chang!"
Christi R. · Google review
★★★★★
"Calvin was extremely helpful and patient when explaining technical issues. I'll 100% be using his IT services again!"
Mira B. · Google review
★★★★★
"Working with Calvin is a fantastic experience! He is a true professional who is fast, completely trustworthy, and always ready to go above and beyond."
Marissa B. · Google review
★★★★★
"He's always been able to fix my IT issues in a timely and efficient manner. He is very professional and knowledgeable as well as kind and patient."
Terri E. · Google review
★★★★★
"Calvin and team not only know their stuff, they are creative, innovative and timely! And so easy to work with!"
Ann-Marie R., nonprofit · Google review
Frequently asked questions
What does HTL 365 do?
HTL 365 provides managed IT, cybersecurity, secure data destruction and private AI for Houston-area professional firms that handle client data, such as CPA, law and property management firms.
What is HTL 365 Private AI?
An on-prem AI server installed and managed in your office, so staff can use an AI assistant, document Q&A and analytics without sending client data to a public cloud. First installs begin November 2026.
What areas do you serve?
We work onsite across greater Houston. Call us to confirm coverage for your address. Remote support covers your team wherever they work.
What happens in the free assessment?
We review your devices, Microsoft 365, backups and security policies, then give you a prioritized, plain-English list of what to fix.
Why combine IT support with data destruction?
Data has to be protected for its whole life, including when devices are retired. One partner covering both means no gap at the end and a single record of proof.
Retiring old computers or drives?
Tell us roughly how many devices and your ZIP. We reply with a pickup quote and a date.