Firefox Add-ons

13Versions

0Code reviewed

Not reviewed

No code review on record

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179 indicators in this extension

179 indicators

0 versions analysed

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What our analysis found

Tailfeather is not yet reviewed by Extension Auditor. Its permissions mean it can inject scripts into pages. It comes from a publisher with 6 extensions and was last updated in June 2026.

Tailfeather Firefox extension security report

ID: tailfeather

Extension Info & Metadata

Status

Active

Version

1.7.0

Size

4.10 MB

Rating

5.0/5

Reviews

Users

Type

Extension

Updated

Jun 26, 2026

Publisher Contextual Analysis

Author: dragongirlsnout
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

15,195

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Install growth

User Growth

Showing data from Apr 13, 2026 to Sep 30, 2026

Versions

-7.14%(-5 users)

Compared to 3 months ago

13 versions released in this period

See plans

React Flow

Internal permhash`b021843996…`
No malicious matches

1 other extension carries this fingerprint, none of them known malicious.

Withheldnot flagged

Permhash (Mandiant)`efdfdecb64…`
Too common to be evidence

3,008 other extensions carry this fingerprint, 185 of them known malicious. A permission set this common is not evidence on its own; the most installed members are listed for reference.

Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
Withheldmalicious
+3,001 more

Network indicators

179 URLs and 0 IP literals were extracted from this version.

Item	Type	Severity	Description
scripting	Permission	Critical	This permission allows injection and execution of JavaScript on any webpage. Rated Critical because it can modify page content, steal sensitive data, and inject malicious code into any site the extension has access to.
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk:• 10% increase: Early script execution enables pre-emptive content manipulation
storage	Permission	Medium	This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
://.noterook.net/	Host	Medium	Host permission — access limited to this URL pattern.
Early Content Script Execution	Risk Factor	Medium	This extension runs content scripts at document_start.

179 indicators in this extension

179 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

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About this extension

Utilities for Noterook

User reviews

5.0 out of 5 · 1 most recent review

Text reviews

Positive

Negative

a very fun extension

zlugg0·15 May 2026

Extension files

Browse and explore files within this extension package

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URLs

179

URLs

View the external URLs this extension communicates with to understand its network activity and data interactions.

No URLs found

No IP addresses found

179 indicators in this extension

179 indicators

0 versions analysed

Every finding is verified by a security analyst. Unlock the code evidence, indicators and version history.

Unlock this report — $4.99 Start 7-day trial — all reports

One-time payment · Secure checkout by Stripe

Version	Size	Verdict	Findings	Permhash
1.1.0 Latest	4.08 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.2.0	4.09 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.3.0	4.13 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.3.1	4.13 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.3.2	4.13 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.4.0	4.14 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.4.1	4.14 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.4.2	4.14 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.5.0	4.11 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9
1.5.1	4.12 MB	Not scanned	—	efdfdecb64ab692a10a22159e6e03f859fc20a5c297c4a788c3c2248783eb0f9

Showing 1 to 10 of 20 rows

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Code Diff

Compare extension code between any two versions.

0 changed files detected

No comparable text files found between these versions.

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Not reviewed

179 indicators in this extension

What our analysis found

Tailfeather Firefox extension security report

Extension Info & Metadata

Publisher Contextual Analysis

Install growth

User Growth

Threat relationships

Internal permhash`b021843996…`
No malicious matches

Permhash (Mandiant)`efdfdecb64…`
Too common to be evidence

Network indicators

Security analysis

Manifest File Security Analysis

179 indicators in this extension

Store listing & files

About this extension

User reviews

User Reviews

Extension files

Network indicators

URLs

179 indicators in this extension

Versions & changes

Version History

Code Diff

User Reviews

User Growth

Rating Count

Average Rating

Threat relationships

Internal permhash`b021843996…`
No malicious matches

Permhash (Mandiant)`efdfdecb64…`
Too common to be evidence

Network indicators

Not reviewed

179 indicators in this extension

What our analysis found

Tailfeather Firefox extension security report

Extension Info & Metadata

Publisher Contextual Analysis

Install growth

User Growth

Threat relationships

Internal permhashb021843996…No malicious matches

Permhash (Mandiant)efdfdecb64…Too common to be evidence

Network indicators

Security analysis

Manifest File Security Analysis

179 indicators in this extension

Store listing & files

About this extension

User reviews

User Reviews

Extension files

Network indicators

URLs

179 indicators in this extension

Versions & changes

Version History

Code Diff

User Reviews

User Growth

Rating Count

Average Rating

Threat relationships

Internal permhashb021843996…No malicious matches

Permhash (Mandiant)efdfdecb64…Too common to be evidence

Network indicators

Internal permhash`b021843996…`
No malicious matches

Permhash (Mandiant)`efdfdecb64…`
Too common to be evidence

Internal permhash`b021843996…`
No malicious matches

Permhash (Mandiant)`efdfdecb64…`
Too common to be evidence