The direct link for the issue of the Marty's Bent newsletter (which was reprinted on Bitcoin Magazine) can be found from the following post, found here on SN, where the newsletter issue was earlier shared:

Marty's Bent Issue #1283: Trusted third parties are security holes #97399 https://tftc.io/martys-bent/issue-1283-trusted-third-parties-are-security-holes/