By Johannes B. Ullrich, Ph.D. A Survey of Bluetooth Vulnerabilities
https://isc.sans.edu/forums/diary/A+Survey+of+Bluetooth+Vulnerabilities+Trends/27460/
Google Chrome Update
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html

Attacks on PDF Certification
https://www.pdf-insecurity.org
nginx vulnerability
https://x41-dsec.de/lab/advisories/x41-2021-002-nginx-resolver-copy/
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