What criminal conduct if someone uses company wi--fi to download a Trojan horse which causes the company's server to crass?

The criminal conduct in this scenario would likely fall under the category of unauthorized access to a computer system, which is a form of hacking. This could be prosecuted as a violation of the Computer Fraud and Abuse Act or similar laws depending on the jurisdiction. Additionally, the individual could also be charged with intentional damage to a computer system, which is a separate offense.

Criminal Conduct:

1. Unauthorized Access to a Computer System (18 U.S. Code § 1030):

- Accessing a protected computer system (the company's server) without authorization.

2. Computer Fraud and Abuse Act (18 U.S. Code § 1030)

- Knowingly transmitting a damaging program (Trojan horse) that causes damage to the computer system.

Additional Charges:

Depending on the severity and impact of the crime, additional charges may include:

- Destruction of Computer Data (18 U.S. Code § 1030)
- Theft of Trade Secrets (18 U.S. Code § 1831)
- Corporate Espionage (18 U.S. Code § 1832)

Consequences:

- Imprisonment for up to 10 years
- Fines
- Forfeiture of assets used in the crime
- Restitution to the victim company