Protection Circle primarily discusses corporate sector surveillance detection and covert protective operations, but also covers various subjects in the fields of intelligence, private security, executive protection and terrorist activity prevention.

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Ami Toben is the author of Surveillance Zone and Ghost Echo, the owner of Protection Circle and an experienced security professional who specializes in terrorist activity prevention, surveillance detection, and covert protective operations.
Trained in Israel, Japan and the US, Ami has over 20 years of military (IDF) and private sector security experience. Currently based in the San Francisco Bay Area, Ami has been providing high-end protective services to Fortune 500 corporations, foreign governments, foundations, nonprofit organizations and high-net-worth individuals.