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Deobfuscator 0.1.0
od Renaud Allard
Reveals real destinations of obfuscated email security links and shortened URLs with privacy-preserving resolution.
O doplňku
# Thunderbird Deobfuscator
A powerful Thunderbird extension that reveals the real destination of obfuscated email security links and shortened URLs with privacy-preserving resolution options.
## Features
### Universal Protection Coverage
Supports 17+ email security services including Microsoft, Proofpoint, Mimecast, Barracuda, Cisco, and more.
### URL Shortener Support with Privacy Controls
Detects and resolves shortened URLs (bit.ly, tinyurl.com, t.co, etc.) with clear privacy warnings.
- Direct Resolution (fast, <1s) - Available now
- Tor Resolution (private, in development) - Anonymous via embedded Tor
### Automatic Detection & Warning
Warning button automatically appears in the message toolbar when opening emails containing obfuscated links, showing the exact count of protected URLs detected.
### Simple Right-Click Interface
Right-click any protected or shortened link -> Select "Deobfuscate Link" -> See the real destination or choose resolution method.
### Beautiful Theme-Aware Popup
- Clean, modern interface that respects your system theme (light/dark mode)
- Shows both original and decoded URLs side-by-side
- One-click copy buttons for easy URL sharing
- Clear privacy warnings before any network requests
### Privacy-First Design
- All protection service processing happens locally in Thunderbird
- No automatic URL resolution - always requires user consent
- Clear privacy warnings explain what information is exposed
- No external servers or tracking for protection services
- Original emails remain completely unchanged
### Opens in Your Browser
Decoded URLs open in Firefox (or your default browser), not within Thunderbird.
---
## Supported Services
### Email Security Services (17+)
**Enterprise Solutions**
- Microsoft Safe Links
- Proofpoint URL Defense (v2 & v3)
- Mimecast URL Protect
- Barracuda Link Protection
- Cisco Secure Email
- Check Point Harmony Email
- Symantec/Broadcom Messaging Gateway
- Trend Micro Email Security
- FireEye/Trellix
**Additional Services**
- Sophos Email Security
- Trustwave MailMarshal
- Egress Defend
- Hornetsecurity ATP
- OpenText/EdgePilot
- Intermedia
- PostOffice
- Generic URL protection services
### URL Shorteners (26+)
**Popular Services**
- bit.ly / bitly.com
- TinyURL (tinyurl.com)
- Twitter (t.co)
- Google (goo.gl)
- Ow.ly
- is.gd
- Buff.ly
**Social Media & Enterprise**
- LinkedIn (lnkd.in)
- YouTube (youtu.be)
- Facebook (fb.me)
- Amazon (amzn.to)
- eBay (ebay.us)
- Rebrandly (rebrand.ly)
**Privacy-Focused Services**
- URLVanish (urlvanish.com)
**Additional Shorteners**
- adf.ly, bc.vc, clck.ru, db.tt, ity.im, q.gs, qr.ae, qr.net, smarturl.it, su.pr, trib.al, u.to, v.gd, x.co, zip.net, zpr.io, and more!
---
## Usage
### For Email Security Links (Instant Deobfuscation)
1. Open an email with a protected link
2. Look for the warning -- A warning button automatically appears in the message toolbar showing: Warning: 3 Obfuscated Links
3. Right-click on any obfuscated URL
4. Select "Deobfuscate Link" from the context menu
5. Review the popup showing:
- Original link: The wrapped/protected URL
- Clean URL: The real destination
6. Choose an action:
- Open Clean Link -- Opens the decoded URL (recommended)
- Open Original Link -- Opens the wrapped URL (if needed)
- Cancel -- Close without action
- Copy -- One-click copy either URL to clipboard
**Example:**
**Before:** https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fexample.com
**After:** https://example.com
### For URL Shorteners (Privacy-Aware Resolution)
1. Open an email with a shortened link (bit.ly, tinyurl.com, etc.)
2. Right-click on the shortened URL
3. Select "Deobfuscate Link" from the context menu
4. Review the warning -- Extension detects shortener and shows:
URL Shortener Detected
Service: bit.ly (URL shortener)
Destination Unknown
5. Choose resolution method:
Direct Resolution (Fast)
- Exposes to shortener: Your IP address, timestamp, that you checked this link
- Speed: Usually <1 second
- Click: "Resolve Directly"
Tor Resolution (Private) -- *In development*
- Will hide your real IP (uses Tor exit node)
- Anonymous resolution via embedded Tor
- Expected speed: 3-10 seconds
- Status: Not yet available
6. After resolution, see the final destination:
- Shortened link: bit.ly/abc123
- Final destination: https://example.com/real/page
7. Choose an action:
- Open Destination -- Opens the resolved URL (recommended)
- Open Shortened Link -- Opens the shortener URL
- Cancel -- Close without action
**Example:**
**Before:** https://bit.ly/3xY2zQ
**Privacy Warning -> User Confirms -> Resolution**
**After:** https://example.com/real/destination/page
---
## Privacy Guarantees
**Email Security Links:**
- 100% local processing
- No network requests
- Instant results
**URL Shorteners:**
- Detection is local (no network)
- **Third-Party Querying:** Resolution involves the add-on querying the shortener service directly. This is functionally equivalent to clicking the original link, but the action is triggered by the add-on *without* the user clicking the link in the email body.
- Resolution requires network request (exposes your IP)
- Always asks permission first
- Clear warnings about privacy trade-offs
- User chooses between speed and privacy
- Never resolves automatically
A powerful Thunderbird extension that reveals the real destination of obfuscated email security links and shortened URLs with privacy-preserving resolution options.
## Features
### Universal Protection Coverage
Supports 17+ email security services including Microsoft, Proofpoint, Mimecast, Barracuda, Cisco, and more.
### URL Shortener Support with Privacy Controls
Detects and resolves shortened URLs (bit.ly, tinyurl.com, t.co, etc.) with clear privacy warnings.
- Direct Resolution (fast, <1s) - Available now
- Tor Resolution (private, in development) - Anonymous via embedded Tor
### Automatic Detection & Warning
Warning button automatically appears in the message toolbar when opening emails containing obfuscated links, showing the exact count of protected URLs detected.
### Simple Right-Click Interface
Right-click any protected or shortened link -> Select "Deobfuscate Link" -> See the real destination or choose resolution method.
### Beautiful Theme-Aware Popup
- Clean, modern interface that respects your system theme (light/dark mode)
- Shows both original and decoded URLs side-by-side
- One-click copy buttons for easy URL sharing
- Clear privacy warnings before any network requests
### Privacy-First Design
- All protection service processing happens locally in Thunderbird
- No automatic URL resolution - always requires user consent
- Clear privacy warnings explain what information is exposed
- No external servers or tracking for protection services
- Original emails remain completely unchanged
### Opens in Your Browser
Decoded URLs open in Firefox (or your default browser), not within Thunderbird.
---
## Supported Services
### Email Security Services (17+)
**Enterprise Solutions**
- Microsoft Safe Links
- Proofpoint URL Defense (v2 & v3)
- Mimecast URL Protect
- Barracuda Link Protection
- Cisco Secure Email
- Check Point Harmony Email
- Symantec/Broadcom Messaging Gateway
- Trend Micro Email Security
- FireEye/Trellix
**Additional Services**
- Sophos Email Security
- Trustwave MailMarshal
- Egress Defend
- Hornetsecurity ATP
- OpenText/EdgePilot
- Intermedia
- PostOffice
- Generic URL protection services
### URL Shorteners (26+)
**Popular Services**
- bit.ly / bitly.com
- TinyURL (tinyurl.com)
- Twitter (t.co)
- Google (goo.gl)
- Ow.ly
- is.gd
- Buff.ly
**Social Media & Enterprise**
- LinkedIn (lnkd.in)
- YouTube (youtu.be)
- Facebook (fb.me)
- Amazon (amzn.to)
- eBay (ebay.us)
- Rebrandly (rebrand.ly)
**Privacy-Focused Services**
- URLVanish (urlvanish.com)
**Additional Shorteners**
- adf.ly, bc.vc, clck.ru, db.tt, ity.im, q.gs, qr.ae, qr.net, smarturl.it, su.pr, trib.al, u.to, v.gd, x.co, zip.net, zpr.io, and more!
---
## Usage
### For Email Security Links (Instant Deobfuscation)
1. Open an email with a protected link
2. Look for the warning -- A warning button automatically appears in the message toolbar showing: Warning: 3 Obfuscated Links
3. Right-click on any obfuscated URL
4. Select "Deobfuscate Link" from the context menu
5. Review the popup showing:
- Original link: The wrapped/protected URL
- Clean URL: The real destination
6. Choose an action:
- Open Clean Link -- Opens the decoded URL (recommended)
- Open Original Link -- Opens the wrapped URL (if needed)
- Cancel -- Close without action
- Copy -- One-click copy either URL to clipboard
**Example:**
**Before:** https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fexample.com
**After:** https://example.com
### For URL Shorteners (Privacy-Aware Resolution)
1. Open an email with a shortened link (bit.ly, tinyurl.com, etc.)
2. Right-click on the shortened URL
3. Select "Deobfuscate Link" from the context menu
4. Review the warning -- Extension detects shortener and shows:
URL Shortener Detected
Service: bit.ly (URL shortener)
Destination Unknown
5. Choose resolution method:
Direct Resolution (Fast)
- Exposes to shortener: Your IP address, timestamp, that you checked this link
- Speed: Usually <1 second
- Click: "Resolve Directly"
Tor Resolution (Private) -- *In development*
- Will hide your real IP (uses Tor exit node)
- Anonymous resolution via embedded Tor
- Expected speed: 3-10 seconds
- Status: Not yet available
6. After resolution, see the final destination:
- Shortened link: bit.ly/abc123
- Final destination: https://example.com/real/page
7. Choose an action:
- Open Destination -- Opens the resolved URL (recommended)
- Open Shortened Link -- Opens the shortener URL
- Cancel -- Close without action
**Example:**
**Before:** https://bit.ly/3xY2zQ
**Privacy Warning -> User Confirms -> Resolution**
**After:** https://example.com/real/destination/page
---
## Privacy Guarantees
**Email Security Links:**
- 100% local processing
- No network requests
- Instant results
**URL Shorteners:**
- Detection is local (no network)
- **Third-Party Querying:** Resolution involves the add-on querying the shortener service directly. This is functionally equivalent to clicking the original link, but the action is triggered by the add-on *without* the user clicking the link in the email body.
- Resolution requires network request (exposes your IP)
- Always asks permission first
- Clear warnings about privacy trade-offs
- User chooses between speed and privacy
- Never resolves automatically
