Poland

See a legislative analysis by Professor Andrzej Adamski (word.doc)

The Penal Code:
Article 267. § 1. Whoever, without being authorised to do so, aquires information not destined for him, by opening a sealed letter, or connecting to a wire that transmits information or by breaching electronic, magnetic or other special protection for that information shall be subject to a fine, the penalty of restriction of liberty or the penalty of deprivation of liberty for up to 2 years.
§ 2. The same punishment shall be imposed on anyone, who, in order to aquire information to which he is not authorised to access, installs or uses tapping, visual detection or other special equipment.
§ 3. The same punishment shall be imposed on anyone, who imparts to another person the information obtained in the manner specified in § 1 or 2 discloses to another person.
§ 4. The prosecution of the offence specified in §1 - 3 shall occur on a motion of the injured person.

Article 268. § 1. Whoever, not being himself authorised to do so, destroys, damages, deletes or alters a record of essential information or otherwise prevents or makes it significantly difficult for an authorised person to obtain knowledge of that information, shall be subject to a fine, the penalty of liberty or the penalty of deprivation of liberty for up to 2 years.
§ 2. If the act specified in § 1 concerns the record on an electronic information carrier, the perpetrator shall be subject to the penalty of deprivation of liberty for up to 3 years.
§ 3. Whoever, by committing an act specified in § 1 or 2, causes a significant loss of property shall be subject to the penalty of deprivation of liberty for a term of between 3 months and 5 years.
§ 4. The prosecution of the offence specified in § 1-3 shall occur on a motion of the injured person.

Article 269. §1. Whoever destroys, deletes or changes a record on an electronic information carrier, having a particular significance for national defense, transport safety, operation of the government or other state authority or local government, or interferes with or prevents automatic collection and transmission of such information, shall be subject to the penalty of deprivation of liberty for a term of between 6 months and 8 years.
§ 2. The same punishment shall be imposed on anyone, who commits the act specified in §1 by damaging a device used for the automatic processing, collection or transmission of information.