[morsch]

Pretending the BSI has no connection to the intelligence community is just as disingenuous as pretending they are an intelligence agency themselves. Just going by your quote, many of their tasks are in the domain of counter-intelligence.

Beyond that, they are also responsible for the (quite unenviable) tasks of certifying/auditing the intelligence services IT infrastructure, not just in terms of security but also in terms of whether it stays within the bounds of the laws limiting what can be recorded and shared. From what was revealed in the parliamentary hearings prompted by Edward Snowden's leaks, they didn't do a very thorough job.