"The canary trap is a simple tool often used to identify leakers or double agents. To make one, you simply share a document, image, or database but make tiny changes that are unique to each recipient."
"Elections Alberta quickly investigated and announced that the list used by Centurion was a copy of one legitimately released to the Republican Party of Alberta."
"Whenever they release a copy of the electoral list, they salt it with additional but bogus entries. The fake entries inserted in the Republican Party version of the list showed up in Centurion's online tool, too."
"The canary trap enabled Elections Alberta to identify the source of the leak, demonstrating the effectiveness of traditional methods in modern security."
Canary traps serve as a practical method for detecting information leaks by altering documents for each recipient. In Alberta, a separatist group misused an electoral list obtained from the Republican Party, which was salted with fake entries. Elections Alberta identified the leak through these unique alterations, leading to a court order to shut down the group's online database. The method highlights the effectiveness of simple security measures in a high-tech world.
Read at Ars Technica
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