Ted

Ability to change population settings in the risk analysis perspective

3

Hi! In the "Analyze risk" tab, on the bottom of the UI, tab "Population", I can't un-tick the "Use this population" box, nor un-select USA to select another country. When...

Add CMake support to the C++ library

1

Compiling the C++ library currently requires the use of Bazel. Most people outside Google use CMake instead. It would be good to add support for CMake.

Floating-point issue in noise samplers

8

Dear OpenDP team, As suggested by @Shoeboxam, I took a look at the approach OpenDP uses to sample noise. My understanding is that it implements three main mitigations against floating-point...

DP quantiles fail with a RuntimeError

1

Hi folks, I started from the [basic data analysis](https://github.com/opendp/smartnoise-samples/blob/master/analysis/basic_data_analysis.ipynb) notebook and wanted to try out quantile computation with the exponential mechanism. I slightly modified the 10th code cell of the...

Opacus uses unsafe floating-point noise generation, even with secure_mode=True

4

## 🐛 Bug The [`_generate_noise`](https://github.com/pytorch/opacus/blob/da05f77877152cf4e7fb8f66fbdc1ed351bf4d76/opacus/optimizers/optimizer.py#L119) primitive has a `secure_mode` parameter. When set to True, the documentation claims that the noise distribution is secure against floating-point attacks. This is wrong for...

A friendly (and maybe interactive?) introduction to differential privacy

2

## About the author Hi folks, I'm Damien, an expert in differential privacy — a principled way of releasing statistics about sensitive data, without leaking information about individuals. I used...

Differential privacy primitives use insecure noise generation

2

Hi folks, [This method](https://github.com/prestodb/presto/blob/master/presto-main/src/main/java/com/facebook/presto/operator/aggregation/noisyaggregation/NoisyCountAggregationUtils.java#L72) is adding noise to a sum for the purpose of enforcing differential privacy (as described in a recent talk at PEPR '24). The method used to...

Insecure noise primitives should be marked as such and/or removed entirely

2

Hi folks, As you already know, the floating-point noise mechanisms provided by diffprivlib are all vulnerable to precision-based attacks, as described in [this blog post](https://www.tmlt.io/resources/tiny-bits-matter-precision-based-attacks-on-differential-privacy) or [this paper](https://arxiv.org/abs/2207.13793). This also...