Security.

How Wurding protects its dictionary, how it protects you, and how to tell us if something is wrong.

Lookups run offline

The dictionary is embedded in the extension. Looking up a word or reviewing a passage makes no network request. The only network traffic the extension ever produces is license-token refresh while signed in, and the feedback form when you press send.

• No words you look up, and nothing you paste, is ever sent to any server — with one exception you control: the feedback form (see below).
• The extension contains no analytics, telemetry or tracking of any kind — it never reports what you look up, what you paste, or even that you used it.
• No external fonts, CDNs, or third-party resources are loaded: everything the extension needs to run ships inside it.
• The feedback form is the one thing that sends anything out, and only when you press send. Your message goes through a Cloudflare Worker that we run, which passes it to our email provider (Resend) so it reaches us. It contains what you wrote, your email address if you chose to give one, and some context: the word you were looking at, the extension version, your spelling and browser language settings, and a timestamp. Cloudflare and Resend handle it in transit; we use it only to read and answer your message.

That is a statement about the extension. This website is a separate thing, and what it records is set out plainly on the privacy page.

Dictionary protection

• Dictionary data files are encrypted at rest inside the extension, with per-file keys.
• Pro data is decrypted with a key issued only to Pro accounts.
• The dictionary contains proprietary marker entries used to detect unauthorised extraction. Their form is not disclosed.

Account security

• Sign-in is by emailed link or one-time code. There are no passwords to leak.
• Your plan is confirmed by a tamper-proof signed token from our server, which the extension checks on your device.
• Cards are handled entirely by Stripe. We never see or store a card number.

Legal notice

Wurding’s dictionary, markers, and curation are protected as trade secrets and by copyright. Unauthorised extraction, reproduction, or redistribution may give rise to civil and, where applicable, criminal liability. To license the dictionary for legitimate use, write to us.

Reporting a vulnerability

Email info@wurding.com rather than filing anything public. We acknowledge within 72 hours and will keep you informed.