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Content type: Report
First published in 2017, PI’s Guide to International Law and Surveillance is an attempt to collate relevant excerpts from these judgments and reports into a single principled guide that will be regularly updated. This is the fourth edition of the Guide. It has been updated it to reflect the most relevant legal developments until March 2024.The Guide aspires to be a handy reference tool for anyone engaging in campaigning, advocacy, and scholarly research, on these issues. The fourth…
Content type: Explainer
What is an IMSI catcher?
‘IMSI’ stands for ‘international mobile subscriber identity’, a number unique to your SIM card. IMSI catchers are also known as ‘Stingrays’.
An ‘IMSI catcher’ is a device that locates and then tracks all mobile phones that are connected to a phone network in its vicinity, by ‘catching’ the unique IMSI number.
It does this by pretending to be a mobile phone tower, tricking mobile phones nearby to connect to it, enabling it to then intercept the data from that phone…