As part of his research, Pedro uses a TOR browser to access threat actors’ sites. He is able to see information about recent breaches and can download data dumps provided by the threat actors. What information source is Pedro using?

Sites accessible using TOR are considered part of the dark web. Information-sharing organizations like ISACs share information in an industry vertical or among other organizations that participate. Proprietary information is provided by vendors, typically as part of a contract or service. Threat feeds may be public or private and provide information about threats in a digestible format for use with security tools.