DoubleCheck – Scam & Phishing Detection for LinkedIn, Facebook & Telegram
Extension Actions
Detect scams, phishing, and fake job offers on LinkedIn, Facebook & Telegram — privately, before you reply.
Scammers use fake job offers, crypto bait, and urgent “verification” messages to pressure you into replying.
DoubleCheck highlights common scam red flags before you reply.
🛡️ What is DoubleCheck?
DoubleCheck is a lightweight Chrome extension that detects scams and phishing while you chat.
It works on LinkedIn, Facebook Messenger, and Telegram Web, scanning conversations in real time and showing clear risk warnings — directly in your browser.
No accounts. No dashboards. Just timely alerts.
🧠 How it works
• Open a conversation
• DoubleCheck analyzes the message context
• You see a clear risk score with simple explanations
That’s it.
🔐 Privacy-first by design
DoubleCheck runs locally by default and does not require accounts, tracking, or logins.
Optional AI analysis may use external services to process message text.
We never sell data or use it for advertising.
🌍 Supported platforms
• LinkedIn
• Facebook Messenger
• Telegram Web
Coming soon: Discord, WhatsApp, Fiverr
⚙️ Key features
• Context-aware scam and phishing detection (not keyword-based)
• Automatic warnings while you chat
• Clear risk scores with human-readable explanations
• Scan history for past conversations
• Scan LinkedIn job postings for scam red flags before you apply
• Whitelist trusted users
• Fast, lightweight, and always on
🚫 Don’t let scammers waste your time
One wrong reply can be enough.
Install DoubleCheck and browse with confidence.
📝 Important note
DoubleCheck helps identify common scam patterns, but it is not a guarantee.
Some scams may not be detected, and some legitimate messages may be flagged.
Always use your own judgment online.
DoubleCheck does not block messages or take actions on your behalf — it only provides analysis and warnings.
⭐ Help protect others
If DoubleCheck helped you avoid a scam, please leave a review.
Your feedback helps keep others safe.
Latest reviews
- Arthur Fogle
- It's fine once you figure it out, does what it says it does. But I am giving it two stars, because I cannot cancel the sub, the option to do so just loops the chrome store.
- Daniel Eitan
- Great product amazing execution
- David Rubinstein
- Really like this extension. I kept getting weird messages on LinkedIn and Facebook, and ScamSniff instantly points out the sketchy ones. Super simple and makes me feel safer online.
- Itamar Bell
- This extension gives me so much peace of mind! I used to worry about every suspicious message, but now I can browse LinkedIn without that constant anxiety. It just works quietly in the background and I feel so much safer. Highly recommend!
- Avinoam Kugler
- Great add on, especially for someone who gets flooded with scams on LinkedIn. Saves a lot of cognitive resources and time
- roy levy
- I'm the developer of ScamSniff, and I made this to help people (including myself) spot sketchy messages faster. It's not perfect, but it already helped me avoid some scammy DMs. If you try it out, I'd really appreciate feedback or suggestions — it's open-source and I'm actively working on improvements.