AI Security Roundup

Daily feed of AI security, malware, and defensive research updates.

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Medieval Encrypted Letter Decoded

Medieval Encrypted Letter Decoded Sent by a Spanish diplomat. Apparently people have been working on it since it was rediscovered in 1860. Tags: history of cryptography Posted on April 27, 2026 at …

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Hiding Bluetooth Trackers in Mail

Hiding Bluetooth Trackers in Mail It was used to track a Dutch naval ship: Dutch journalist Just Vervaart, working for regional media network Omroep Gelderland, followed the directions posted on the …

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Trailmark turns code into graphs

We’re open-sourcing Trailmark , a library that parses source code into a queryable call graph of functions, classes, call relationships, and semantic metadata, then exposes that graph through a Python …