Germany does not license private investigation as a distinct profession. Whether a business needs a formal permit depends on what it actually does. Activities that amount to security or surveillance work can require a permit under Section 34a of the Gewerbeordnung (Trade Regulation Act). General detective work such as private-client surveillance, accident analysis, and business research typically only needs a standard business registration under Section 14 of the same law. There’s no mandatory state exam or central licensing authority for the profession itself.
Germany’s data protection framework, the Bundesdatenschutzgesetz (BDSG) alongside the EU’s General Data Protection Regulation (GDPR), has applied since May 25, 2018. Any investigative work involving personal data has to rely on one of the GDPR’s recognized legal bases, most often legitimate interest, and that interest has to be weighed against the privacy rights of the person being investigated. Recording someone’s private conversation without their knowledge is a criminal offense in Germany. Section 201 of the Criminal Code (StGB) makes it illegal to record or listen in on another person’s non-public spoken words without consent, punishable by up to three years in prison. Playing back an illegally made recording is a separate offense under the same section.
German divorce law has been no-fault since a 1976 reform. Section 1565 of the Civil Code (BGB) recognizes only one ground for divorce: the marriage has irretrievably broken down. Infidelity by itself isn’t a legal ground, though it can be treated as evidence that the marriage has failed. Custody is handled separately from any question of fault. Married parents share joint custody by default, and that doesn’t automatically change after a divorce.
Germany’s Criminal Code also treats several categories of computer crime as distinct offenses: unauthorized access to specially secured data (Section 202a), interception of non-public data transmissions (Section 202b), and manufacturing or distributing hacking tools (Section 202c, sometimes called the Hacker Paragraph). Each carries a penalty of up to two or three years in prison, which is relevant to any digital forensics or cybercrime matter involving Germany.