- have data processing agreements with every 3rd party that processes personal data for them
- document technical and organisational measures with regard to privacy and security
- have records of data processing activities
While these are useful - GDPR or not - many aspects of those are left intentionally vague. In the past few months, data protection experts and company owners alike have been racking their brains as to how to implement the details entailed by those requirements.
A government spokesperson only just recently has been quoted that although there's "some uncertainty" regarding the implementation of the new regulation the government doesn't intend to do anything about that right now but rather wants to wait and see how civil servants and courts are going to interpret the new law. In my opinion, that's a recipe for disaster waiting to happen.
On top of that, Germany is particularly notorious for its 'liberal' regulation regarding cease-and-desist letters. There's a whole industry of shady lawyers that make a living by sending these out en masse to small companies that supposedly don't comply with regulations such as the equally notorious legal notice requirement for websites. They're perhaps already waiting with bated breath because GDPR opens a whole new 'market' for them.
Many of my fellow entrepreneurs are worried about this right now and these are people who are both well-prepared and normally not easily spooked by bureaucracy.