Then "link" likely refers to a link in a physical object like a chain or a link in a network. So putting it all together, the user might be asking about a portable device used to crack or bypass a link in a chain (physical security) or a network link (cybersecurity).
So, setting: Indonesia. A character uses a portable tool to crack a security chain (atas dek link) on a cargo ship. The portable device is a high-tech gadget. The story could involve a theft or sabotage. portable crack atas link
But success came with a price.