Surveillance Countermeasures- The Professional's Guide To Countering Hostile Surveillance Threats By Aden C. Magee (2019) "Surveillance Countermeasures is a 2019 book on physical surveillance and the mitigations one can take to protect against it, written by former U.S. spy Aden C. Magee. It extensively covers topics such as the principles and tactics of physical surveillance operations, surveillance detection, and anti-surveillance." https://www.mediafire.com/file/of9uc7tbn584elv/Surveillance+Countermeasures-+The+Professional's+Guide+To+Countering+Hostile+Surveillance+Threats+By+Aden+C.+Magee+(2019).pdf/file