APT has two major acronyms in IT: Automatically Programming Language, a computer programme language which creates instructions for machine tools that are numerically generated, and Advanced Persistent Threat, which is a type of cyber security threat.

An advanced persistent threat is a computer hacking process or set of computer hacking processes that targets a specific entity.

This can mean an organisation or a nation state.

The ‘advanced’ refers to the sophistication of the techniques used, while the ‘persistent’ refers to the continuous activity of the attacker.