Trust & Safety Library - Trust & Safety Professional Association
Welcome to the Trust & Safety Library! We use this space to collect articles, blog posts, journal articles, lectures, podcasts, and websites that trust and safety professionals may find useful in developing policies, supporting moderators, building systems to detect violations, and generally deepening their practice. We welcome your submissions and feedback. This project was initially
did:plc Directory
PLC is a persistent global identifier system, which allows accounts to retain relationships while changing names or migrating between service providers. It makes use of cryptography and gives individuals (or organizations) direct control and ownership over their identitifier, but does not make use of any blockchain or cryptocurrency technology, and is inexpensive enough to provide as a no-cost service.
did:plc Directory
PLC is a persistent global identifier system, which allows accounts to retain relationships while changing names or migrating between service providers. It makes use of cryptography and gives individuals (or organizations) direct control and ownership over their identitifier, but does not make use of any blockchain or cryptocurrency technology, and is inexpensive enough to provide as a no-cost service.
A PLC-centric Digital Forensic Readiness Framework for Industrial Control Systems
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The Fractal Organization
The world of management is in crisis - the old remedies no longer work and organizations are failing at an increasing rate. Although many talk of 'joined up thinking', few offer practical guidance on how to achieve this in organizations. <b><i>The Fractal Organization</i></b> sets down the practical implications of a well tested systemic approach to building organizations that are capable of surviving and flourishing in these turbulent times. <p>"An excellent read…Many organizations fail at the mercy of their own ignorance. The author has done an excellent job in making ‘the science of effective organization’ accessible to management, providing them with a new knowledge to deal with the uncertainties that the markets place upon them."<br /><b>Stephen J. Brewis, Business Architect, British Telecom</b></p> <p>"...one of the most interesting, thorough and rigorous guides to management that I have ever read, … introduces new insights in every chapter… carries a credibility which acts as a counterbalance to the sometimes difficult message which he conveys which is that a lot of mainstream management practice is at best ineffective and at worst downright destructive. I would recommend this book to anyone interested in management or systems thinking."<br /><b>Penny Marrington</b>, <b>Course Chair, Systems Group, Open University</b></p> <p>"In my opinion this book manages to present sound academic theory that is relevant and helpful to the practitioner in the business. I experienced several A-HA moments."<br /><b>Pauline Marsh, Strategy Director, CS&S International, BAE SYSTEMS</b></p> <p>"The insights of the Viable System Model have been open only to a select few for much too long. Hoverstadt has gone furthest in bringing these ideas to a wider audience…Management books have too often been serious but not practical, or practical but not serious. This book is both brilliantly serious and practical, and often entertaining too."<br /><b>Professor Peter Kawalak, Manchester Business School</b></p> <p>"Integrates mainstream management ideas with the systems ideas underpinning the VSM, and flows and reads well. As a starting point for developing understanding of the VSM in today's world this book improves greatly on all books that have gone before, I would certainly recommend it to colleagues, clients, and students."<br /><b>Dr. Robin Asby, Course Chair, Communication and Systems, Open University</b></p>
Developer Ecosystems for Software Safety
How to design and implement information systems so they are safe and secure is a complex topic. Both high-level design principles and implementation guidance for software safety and security are well established and broadly accepted. For example, Jerome Saltzer and Michael Schroeder’s seminal overview of principles of secure design was published almost 50 years ago,10 and various community and governmental bodies have published comprehensive best practices about how to avoid common software weaknesses—for example, Common Weakness Enumeration (CWE)a and Open Worldwide Application Security Project (OWASP) Cheat Sheet Series.b
Adversarial PLC directory migration - microcosm
Contingency planning: what's our credible failover for the centralized underpinning of ATProto identities?
Adversarial PLC directory migration - microcosm
Contingency planning: what's our credible failover for the centralized underpinning of ATProto identities?
All you need is Wide Events, not “Metrics, Logs and Traces”
This quote from Charity Majors is probably the best summary of the current state of observability in the tech industry - a total, mass confusion.
The Fractal Organisation Manual: How to diagnose & design organisations using the Viable System Model | SCiO - Systems and Complexity in Organisation
RRP: £12.99; Paperback: 192 pp; Publisher: SCiO; ISBN 979-8250847018
“Policy Without Tools Is Just Poetry” - AT Protocol
Juliet Shen from ROOST joins the show to talk through the Coop 1.0 release, what open-source trust and safety unlocks for new builders, and where AI actually belongs in moderation
EDISON BROWSER
The National Police, National Unit, National Information Organisation Service, can not be held accountable for any damage caused by the use of Edison software! Copyright 2021, The National Police, National Unit, National Information Organisation Service, The Netherlands. Version 2.1.160 (Oct. 21, 2025, 11:30 a.m.)
Been thinking about plc.directory as a single-point-of-failure So as a learning exercise, I threw together DIDMARC - an example of an independent witness for the directory 🔍 This approach uses Starknet to be fully trustless, but a trusted mirror could perform similar checks to identify abuse
DIDMARC: DID Mapping Alignment, Reporting & Conformance
didmarc.devcreated a plc backed by sqlite instead of postgres if anyone is interested tangled.org/chadtmiller.com/plc-sqlite i have a setup for an appview in railway where i create an ephemeral environment per pr against a long running pds and plc with some test accounts for dev.
