On LinkedIn, blocking someone prevents them from viewing your profile, sending you messages, or connecting with you. When you block someone, LinkedIn essentially creates a "digital barrier" between you and that person. However, if you later decide to unblock them, that barrier is removed, and they're once again able to interact with you.
: The other person can see your profile and updates if they happen to stumble upon them. Abuse Prevention On LinkedIn, blocking someone prevents them from viewing