Atty. David Tonisson

Atty. David Tonisson

David Tonisson is a lawyer practicing information security, internet. David received a degree from Northwestern Univ SOL, and has been licensed for 22 years.

Chicago Chicago 22 Years Experience 22 year
Call (312) 675-8296

Profile Summary

About David Tonisson at a glance

David Tonisson is a securities and internet attorney based in Chicago, Illinois. They have 22+ years of legal experience, licensed to practice since 2004. Admitted to practice in Illinois (2004), District of Columbia (2005), and California (2014). Educated at Northwestern University School of Law (JD, 2004) and Northwestern Univ SOL Chicago IL Florida Atlantic Univ Boca Raton FL (—). Serves clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • David Tonisson is a lawyer practicing information security, internet
  • David received a degree from Northwestern Univ SOL, and has been licensed for 22 years
  • David practices in Chicago, IL

Practice Areas Explained

David Tonisson's Areas of Practice

Each practice area below reflects the types of cases David Tonisson handles, with a brief overview of what that area of law covers.

Securities Law

David Tonisson is one of 58,852 securities attorneys indexed nationally. Browse securities attorneys in Illinois →

Internet & Cyber Law

Internet and cyber lawyers for data breaches, online defamation, privacy law, and cybersecurity matters.

David Tonisson is one of 15,865 internet attorneys indexed nationally. Browse internet attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this venue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about David Tonisson

Where is David Tonisson's law office located?
David Tonisson's law practice is located in Chicago, Illinois. You can contact the office directly through this profile page.
What practice areas does David Tonisson handle?
David Tonisson focuses on securities, internet. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has David Tonisson practiced law?
David Tonisson has 22+ years of legal experience and has been licensed since 2004.
Where did David Tonisson go to law school?
David Tonisson earned their education at (JD, 2004); (—).
How can I contact David Tonisson for a consultation?
You can contact David Tonisson directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

JD
Northwestern University School of Law
- 2004
Northwestern Univ SOL Chicago IL Florida Atlantic Univ Boca Raton FL
- In Progress

Bar Admissions

Illinois
Admitted: 2004
District of Columbia
Admitted: 2005
California
Admitted: 2014

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