The answer to the puzzle is indeed PHISHING (6 letters).
Here's the breakdown:
- Gevoelig (sensitive) - This hints at something that could be harmful or compromise your security.
- Onlinevoorstel (online proposal) - This suggests a deceptive offer made online.
Together, these clues point towards "phishing," which is a type of online scam where attackers try to trick you into revealing personal information like passwords or credit card details. It perfectly fits the 6-letter constraint and aligns with the meaning of both parts of the clue.