PostSecret

Discover true secrets that have never been shared. Explore the surprising stories behind the secrets.

A Cypherpunk's Manifesto

Privacy is necessary for an open society in the electronic age. Privacy is not secrecy. A private matter is something one doesn't want the whole world to know, but a secret matter is something one doesn't want anybody to know. Privacy is the power to selectively reveal oneself to the world.

timelocked secrets

Encrypt messages that can only be decrypted after a specific time. Powered by drand timelock encryption and stored on your atproto PDS.

Time-lock puzzle

A time-lock puzzle, or time-released cryptography, encrypts a message that cannot be decrypted until a specified amount of time has passed. The concept was first described by Timothy C. May,[1] and a solution first introduced by Ron Rivest, Adi Shamir, and David A. Wagner in 1996.[2] Time-lock puzzle are useful in cases where confidentiality of information is determined by time, such as a diarist who does not want their views released until 50 years after their death, an auction where bids are sealed until the bidding period is closed, electronic voting, and contract signing.[1][3] They can additionally be used in creating further cryptographic primitives, such as verifiable delay functions and zero knowledge proofs.[3]

Ente Paste

Share sensitive text with one-time, end-to-end encrypted links that auto-expire after 24 hours.

Permissioned Data Diary 1: To Encrypt or Not to Encrypt - Daniel's Leaflets

The first in a series of posts about major design decisions along the way to a permissioned data protocol for atproto.

Introductions and kick off

Hello, I’m Simon Horrobin. I’m working on a couple of projects which are ATproto relevant… one to handle sport and health data, the other for managing publishing workflow. Both of these need privacy to varying degrees. I think about this in a few axes… who can create, view, edit, delete, grant, revoke, all over time and state.

Why privacy is important, and having "nothing to hide" is irrelevant

The governments of Australia, Germany, the UK and the US are destroying your privacy. Some people don't see the problem...

DropLock

The link below is like an open lock box that belongs to you. Anyone you share it with can put a secret inside and create a locked link that only you can open.

Disclosure: Psychology Changes Everything

We review literature examining the effects of laws and regulations that require public disclosure of information. These requirements are most sensibly imposed in situations characterized by misaligned incentives and asymmetric information between, for example, a buyer and seller or an advisor and advisee. We review the economic literature relevant to such disclosure and then discuss how different psychological factors complicate, and in some cases radically change, the economic predictions. For example, limited attention, motivated attention, and biased assessments of probability on the part of information recipients can significantly diminish, or even reverse, the intended effects of disclosure requirements. In many cases, disclosure does not much affect the recipients of the information but does significantly affect the behavior of the providers, sometimes for the better and sometimes for the worse. We review research suggesting that simplified disclosure, standardized disclosure, vivid disclosure, and social comparison information can all be used to enhance the effectiveness of disclosure policies.

“Anything you post on the internet will be there as long as it's embarrassing an... | Hacker News

encryption rant

Robustly-secured data that can surprisingly vanish at a moments notice.

The Secret History

The Secret History is the first novel by the American author Donna Tartt, published by Alfred A. Knopf in September 1992. A campus novel, it tells the story of a closely knit group of six Classics students at Hampden College, a small, elite liberal arts college in Vermont.

Exploring Privacy-Preserving Age Verification: A Close Look at Zero-Knowledge Proofs

A path toward protecting young people online that doesn’t sacrifice their privacy or data security, amid persistent concerns about screen time.

Dia on Twitter / X

Meet @ History - an early access feature in Dia that uses memory to find the content you need so you don't have to.It’s brand new, experimental, and off by default. @ History is encrypted & stored locally.Want to give it a try? pic.twitter.com/j2IWUK4Yei— Dia (@diabrowser) June 11, 2025