Informants

Contents

An informant (or snitch) is someone from inside a group or network recruited by an adversary to provide information on the group or network.

An adversary can use different strategies to recruit an informant:

An adversary can use an informant to gather evidence or to map a network.

See the “Infiltrators and informants” topic.

Used in tactics: Incrimination

Mitigations

NameDescription
Attack

You can attack informants when uncovered or years later to discourage others from becoming informants.

Background checks

You can perform background checks to help ensure that someone in your network is not an informant.

Need-to-know principle

You can apply the need-to-know principle to limit the information a potential informant can obtain about your involvement in actions (if an informant isn't involved in an action, they shouldn't know who is involved even if it's their own roommate).

Network map exercise

You can conduct a network map exercise to help ensure your network does not place trust in people who could be or become informants.

Prisoner support

You can support prisoners from your networks: beyond the ethical imperative of this support, people are less likely to turn informant if they feel supported and connected to the movements for which they risked their freedom.

Used in repressive operations

NameDescription
Case against Marius Mason

The main evidence against Marius Mason was provided to investigators by his former husband, Frank Ambrose, who had participated in some of the actions with him[1]. Frank Ambrose became an informant after his arrest in 2007 (which was triggered by him throwing incriminating material in a garbage can)[2]. For several months, the snitch collaborated extensively with the Federal Bureau of Investigation (FBI), secretly recording 178 phone conversations and face-to-face meetings, and providing information on 15 people[3].