Datasets:

olafuraron
/

tracker-radar-ml

domain large_string	prevalence float64	sites int64	fingerprinting_score int64	subdomain_count int64	has_cnames int64	resource_count int64	has_owner int64	has_privacy_policy int64	total_cookie_prevalence float64	max_resource_fingerprinting int64	resource_type_count int64	script_count int64	image_count int64	fetch_count int64	total_first_party_cookies int64	max_cookie_ttl_seconds int64	max_cookie_ttl_days float64	distinct_api_count int64	total_api_calls int64	weighted_fp_score float64	mean_api_weight float64	max_api_weight float64	median_api_weight float64	std_api_weight float64	api_CookieStore_prototype_getAll int64	api_CookieStore_prototype_set int64	api_Date_prototype_getTimezoneOffset int64	api_Document_cookie_getter int64	api_Document_cookie_setter int64	api_HTMLCanvasElement_prototype_toDataURL int64	api_Navigator_prototype_userAgent int64	api_Notification_permission int64	api_window_localStorage int64	api_window_sessionStorage int64	api_count_CookieStore_prototype_getAll int64	api_count_CookieStore_prototype_set int64	api_count_Date_prototype_getTimezoneOffset int64	api_count_Document_cookie_getter int64	api_count_Document_cookie_setter int64	api_count_HTMLCanvasElement_prototype_toDataURL int64	api_count_Navigator_prototype_userAgent int64	api_count_Notification_permission int64	api_count_window_localStorage int64	api_count_window_sessionStorage int64	canvas_api_count int64	navigator_api_count int64	storage_api_count int64	timing_api_count int64	label int64	label_source large_string
draftcountdown.com	0.000014	2	0	1	0	1	0	0	0	0	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
hearst-hdm.map.fastly.net	0.000775	113	1	0	1	206	1	1	0.000021	2	3	1	204	0	4	31,536,024	365.000278	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	tr_category
cubetecn.com	0.000007	1	0	1	0	1	0	0	0	0	1	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
anonm.io	0.00407	593	1	1	0	2	0	0	0.00192	1	2	1	0	0	1	3,612	0.041806	4	569	8.48	2.12	2.61	2.15	0.390256	0	0	0	1	1	0	1	0	1	0	0	0	0	283	280	0	3	0	3	0	0	1	1	0	1	easyprivacy
d2b9xclehvgzgv.cloudfront.net	0.000014	2	0	0	1	1	1	1	0	0	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	easyprivacy
aggieswire.com	0.000014	2	0	3	0	4	0	0	0	0	2	1	0	3	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
briskstorm.com	0.000014	2	2	0	0	2	0	0	0.000014	2	2	1	0	1	0	0	0	8	16	213.65	26.70625	85.13	19.645	27.013912	1	1	1	0	0	1	1	1	1	1	2	2	2	0	0	2	2	2	2	2	1	1	4	1	1	easyprivacy
pastemagazine.com.edgekey.net	0.000014	2	0	1	1	1	1	1	0	0	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
123dok.com	0.000021	3	1	1	0	1	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
thinklink.com	0.000021	3	0	1	0	7	0	0	0	0	3	1	4	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
d1k22ml6q5n5z7.cloudfront.net	0.000014	2	2	0	1	36	1	1	0	1	3	24	8	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	easyprivacy
buttercms.com	0.000103	15	0	1	0	1	1	0	0	0	1	0	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign
ultrasoundpurchase.com	0.000014	2	0	0	0	1	0	0	0	0	1	1	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	inferred_benign

End of preview. Expand in Data Studio

Tracker Radar ML Dataset

An ML-ready tabular dataset of 16,165 third-party web domains labeled as tracking or non-tracking, with 295 behavioral and metadata features extracted from DuckDuckGo's open-source Tracker Radar.

Dataset Description

Each row represents a third-party domain observed on popular websites during DuckDuckGo's Tracker Radar crawl (US region). Features capture how the domain behaves: which browser APIs its scripts call, whether it sets cookies, how prevalent it is across the web, and metadata about the entity that owns it.

Label Construction

Labels are derived from multiple independent sources:

Tracking (1): Domain has a tracking category in Tracker Radar (Advertising, Analytics, Audience Measurement, etc.) or appears in the EasyPrivacy filter list
Non-tracking (0): Domain has only functional categories (CDN, Embedded Content, Online Payment) or is uncategorized with no API usage and negligible cookie prevalence

5,863 ambiguous domains were excluded from the labeled set.

Labels are independent of the fingerprinting heuristic score (0-3), which is included as a column but was not used for labeling. This allows the dataset to be used for evaluating ML models against the heuristic baseline.

Features (295 total)

Group	Count	Description
Domain metadata	9	Prevalence, site count, subdomain count, owner info, resource types
Cookie behavior	4	Cookie prevalence, TTL, first-party cookies set and sent
API binary	131	Whether any resource on the domain uses each browser API
API counts	131	Raw call counts per API aggregated across resources
API aggregates	20	Summary stats of API weights, category-level counts (canvas, audio, navigator, etc.)

Key Columns

domain: The third-party domain name
label: 0 (non-tracking) or 1 (tracking)
label_source: Which source(s) determined the label
fingerprinting_score: DuckDuckGo's heuristic score (0-3), included for comparison but not used in labeling
prevalence: Fraction of top sites that request this domain
weighted_fp_score: Sum of API fingerprint weights for APIs this domain uses

Class Distribution

Label	Count	Percentage
Non-tracking (0)	10,356	64.1%
Tracking (1)	5,809	35.9%

Usage

from datasets import load_dataset

ds = load_dataset("olafurjohannsson/tracker-radar-ml")
train = ds["train"]
test = ds["test"]

# Get features and labels
import pandas as pd
df = train.to_pandas()
print(df["label"].value_counts())
print(df.columns.tolist()[:20])

Source Data

Derived from DuckDuckGo Tracker Radar (CC-BY-NC-SA 4.0) with additional labels from EasyPrivacy.

Source Code

Feature extraction, labeling, and training scripts: github.com/olafurjohannsson/tracker-ml

Limitations

Point-in-time snapshot (US region only)
Labels depend on Tracker Radar categories and EasyPrivacy, both of which have known limitations and edge cases
Some domains (e.g., consent management platforms) are debatable
Does not include raw JavaScript source code, only aggregate behavioral metadata

Downloads last month: 19

Size of downloaded dataset files:

908 kB

Size of the auto-converted Parquet files:

908 kB

Number of rows:

16,165

Models trained or fine-tuned on olafuraron/tracker-radar-ml