Standing lookout during a burglary or cheering on a fight.

Providing physical assistance, tools, or information that facilitates the commission of the crime. 2. Legal Culpability

For an act to constitute abettal, three primary elements must generally be present:

Actively provoking, inciting, or encouraging someone to perform an illegal act.

In most legal systems, an (the person who assists) is often held as legally responsible as the principal (the person who physically commits the crime). This is based on the principle that the crime would not have occurred—or would have been harder to commit—without the abettor's influence or help. 3. Abettal vs. Aiding While closely related, there is a subtle distinction:

A bank employee providing a hacker with internal passwords.