Penal Code Chapter 38 Section 8:

Data trespass.
Any person who, by using an identification code that does not belong to him or by breaking through a corresponding protective system unjustifiable, breaks into a computer system where data are processed, stored or transmitted by electronical or other technical methods or into a separately protected part of such a system, shall be sentenced for data trespass to fines or imprisonment not exceeding one year.

For data trespass is also sentenced any person without breaking into a computer system or a part thereof, uses a special technical device to unjustifiably obtain information that is stored in such a computer system.

Attempt is also punishable.
This Section will only be applied if the act is not punishable as a more severe offense.