Does anyone here know of any cybersecurity weekly/monthly newsletters that showcase new attack methodologies or technical walkthroughs?

I subscribe to many of the ones that report on cybersecurity news and new trends such as Daniel Miessler, but was looking for something with more technical training/walkthroughs of various techniques. I'm thinking of how it could help those learning and doing CTF-type stuff, and also more experienced professionals to share new techniques. Just wondering if there is anything out there?

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