Startup Lock

Name: Startup Lock
Author: Max

Password-locks the browser on startup. One password unlocks; a second, duress password silently wipes all browsing data.

Overview

Firefox Add-ons Store

Daily users

Data as of 2026-07-26

Version:

1.0.1

Last updated: 2026-07-14

Features & Capabilities

Startup Lock password-protects your browser. Every time Firefox starts, it locks all tabs behind a password screen — no browsing is possible until you enter the correct password.

It uses two passwords:

Unlock password — unlocks normally and reopens the tabs you had open.
Duress (wipe) password — a panic password. Entering it silently erases all browsing data (history, cookies, cache, saved logins, downloads, and more) and opens a single blank tab, with no warning and no visible difference from a normal unlock.

Other features - Auto re-locks after a configurable idle timeout (default 10 minutes). - Passwords are never stored in plain text — only salted PBKDF2 hashes, computed on your own device. - No data collection, no analytics, no network requests. Everything stays on your computer.

Please note the limitations. Startup Lock is a deterrent and a panic-wipe tool, not full security. It does not stop Firefox Safe Mode, removing the add-on, using a different profile, or someone reading the profile folder directly on disk. For strong protection, combine it with a separate operating-system account and full-disk encryption.

User Growth & Download Statistics

Add-on

By:

Max

Daily users:

Version:

1.0.1 Last updated: 2026-07-14

Version code:

6349856

Creation date:

2026-07-11

Risk:

Permissions:

Size:

27.11KB

Email:

mt*****@gmail.com

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-26

Compare stats and ranking:

Ranking

# 102,307 ▲ 865

Other rankings

#180 in start page keyword 37 ▼ 1#227 in password-protected keyword 48 ▼ 2

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Max

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/startup-lock/

Email:

mt*****@gmail.com

Website:

https://github.com/maca-sys/FirefoxStartupLock

Is Startup Lock Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Startup Lock requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk impact analysis details

Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Startup Lock is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
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