What is SecureLint and how does it work?

SecureLint is a Chrome extension that runs entirely in your browser. It scans text you type or paste into any web editor in real time, detects sensitive data (API keys, passwords, tokens, credentials), and masks it before it can leak. It also blocks phishing sites using a 14-layer detection engine before the page fully loads.

Is my data ever sent to a server?

For individual users — no. All detection, masking, and phishing checks happen 100% locally inside your browser. No page content, typed text, or detected secrets are ever transmitted to any server. For Enterprise users, masked incident reports (never raw secrets) can be sent to your organization's admin dashboard only when explicitly enabled by your IT admin.

Does SecureLint work on all websites?

Yes. SecureLint works across all websites — standard inputs, textareas, contenteditable elements, and rich text editors like CodeMirror, Monaco, Ace, TinyMCE, CKEditor, and popular productivity tools like Gmail, Slack, Notion, ChatGPT, and more.

How does phishing detection work?

SecureLint uses a 14-layer engine: bloom filter, URL heuristics, homograph/IDN analysis, typosquat detection, WHOIS domain-age check, SSL certificate validation, Google Safe Browsing, and page-content scanning for credential-harvesting language. If Google Safe Browsing confirms the site is safe, the site is automatically unblocked — no false positives.

What types of secrets does SecureLint detect?

SecureLint detects 100+ secret types including AWS, GCP, and Azure credentials; JWT tokens; OAuth access and refresh tokens; database connection strings (MongoDB, Redis, MySQL, PostgreSQL); private keys and certificates (RSA, EC, PGP); Stripe, Slack, and GitHub API keys; SSNs, Aadhaar numbers, and credit card patterns.

Is SecureLint free to use?

SecureLint is a paid product with Pro and Enterprise plans. The Pro plan is designed for individual developers and security professionals, while Enterprise is built for IT and security teams needing full DLP, admin dashboard, and SLA-backed support. Both plans can be activated instantly from securelint.in.

Can I switch plans or cancel anytime?

Yes. You can upgrade, downgrade, or cancel your subscription at any time from your dashboard. If you cancel, your Pro or Enterprise features remain active until the end of your current billing period.

What payment methods are accepted?

For Indian users we accept all major UPI apps (PhonePe, GPay, Paytm), credit and debit cards, and net banking via Razorpay. For international users we accept PayPal and Google Pay.

Does SecureLint check SSL certificates in real time?

Yes. SecureLint performs a real-time SSL/HTTPS certificate check on every page you visit. If the certificate is expired, self-signed, or the site is running on plain HTTP for a login or payment page, SecureLint raises an immediate alert so you never enter credentials on an insecure connection.

How does the domain age alert work?

Phishing sites are almost always newly registered — often less than 7 days old. SecureLint queries WHOIS data in real time and flags any site where the domain was registered recently, showing you the exact registration date before you interact with the page.

Is SecureLint a VAPT tool?

SecureLint performs a continuous, passive VAPT-style real-time scan directly in your browser. It detects exposed credentials, weak SSL, suspicious domains, phishing indicators, XSS attempts, and clickjacking on every page you visit — without requiring any manual test setup. It is not a replacement for a full penetration test, but gives developers and security teams instant, always-on threat visibility.

What is real-time browser security scanning?

Real-time browser security scanning means SecureLint analyses every page you open, every URL you visit, and every input you type — instantly, before threats can cause damage. It checks for phishing indicators, exposed API keys, SSL validity, domain age, redirect chains, crypto drainers, and XSS payloads — all within milliseconds and entirely inside your browser.

How do I install SecureLint?

Visit the Chrome Web Store, search for 'SecureLint' or click the direct install link on securelint.in. Click 'Add to Chrome', confirm permissions, and SecureLint is active immediately — no account required for the free tier.

Does SecureLint slow down my browser?

No. SecureLint is engineered for sub-millisecond detection using optimised regex engines and a local bloom filter for phishing checks. It runs in a content-script context with minimal CPU and memory footprint — independent benchmark tests show less than 2 ms latency per scan cycle.

What is the Enterprise plan?

Enterprise is designed for IT and security teams. It adds centralized policy management, email DLP and send blocking, WAF and social-domain blocking, incident reporting, admin dashboard, and dedicated support with an SLA. Contact our sales team for pricing.

How does SecureLint detect secrets in the browser?

SecureLint uses two detection methods: (1) Regex pattern matching — a library of 100+ provider-specific patterns (AWS, OpenAI, Stripe, etc.) — and (2) Entropy analysis — detecting high-entropy random strings that are statistically likely to be secrets, even if they don't match a known pattern. Both methods run locally in real time.

What types of secrets can SecureLint detect?

SecureLint detects API keys (80+ providers), database connection strings, JWT tokens, OAuth tokens, SSH and RSA private keys, passwords in URLs, environment variable values, high-entropy strings, and custom patterns defined by the user.

Does secret detection work on localhost or internal tools?

Yes. SecureLint scans all web pages loaded in Chrome, including localhost, internal tools, and web-based IDEs. This is especially useful for developers who use browser-based environments like Gitpod, CodeSandbox, or internal admin dashboards.

SECRET DETECTION

Real-Time Secret Detection in Your Browser

SecureLint scans every page in Chrome for API keys, passwords, tokens, and 100+ secret types — using both regex pattern matching and entropy analysis — all in real time, 100% locally.

Add to Chrome — Free

What is secret detection?

Secret detection is the automated identification of sensitive strings — API keys, passwords, tokens, private keys, and database credentials — in digital environments. Traditionally this is a CI/CD concern (tools like GitLeaks scan source code before commit), but browser-level secret detection is increasingly critical.

Developers spend most of their day in a browser. Secrets appear everywhere: in web app configurations, AI chat windows, cloud dashboards, browser DevTools, environment variable editors, and copied clipboard content. None of these are scanned by traditional code-level secret detectors.

SecureLint fills this gap with continuous, real-time secret detection at the browser level — catching credentials the moment they appear on any page, in any context.

Detection Methods

SecureLint uses multiple detection techniques to maximize coverage while minimizing false positives.

Provider Regex

High

Exact pattern matching for known API key formats

AWS AKIA...OpenAI sk-...Stripe sk_live_...

Generic Regex

High

Common credential patterns not tied to a specific provider

password=...api_key=...Authorization: Bearer ...

Entropy Analysis

Medium

Statistical detection of high-entropy random strings

Unknown token formatsEncoded secretsObfuscated keys

Custom Patterns (Pro)

User-defined

User-defined regex patterns for internal secret formats

Internal project tokensProprietary credentialsCustom ID formats

Where Secrets Appear in the Browser

🤖

AI Chat Windows

Developers paste API keys into ChatGPT, Claude, Gemini, and other AI tools to debug integrations or get help with code.

☁️

Cloud Dashboards

AWS Console, GCP, Azure, and other cloud provider dashboards often display credentials in settings pages and configuration panels.

⚙️

CI/CD Web UIs

GitHub Actions, CircleCI, Jenkins web interfaces display environment variables and secrets in pipeline configuration pages.

🖥️

Browser DevTools

API keys and tokens frequently appear in the Network tab (request headers), Console (log output), and Application Storage.

📝

Online Code Editors

Web-based IDEs (CodeSandbox, StackBlitz, Repl.it) show configuration files containing real secrets typed by developers.

📄

Notion & Confluence

Teams paste credentials into documentation and internal wikis, creating persistent exposure even after the key is rotated.

Browser Secret Detection vs. Other Approaches

Code-level scanners only catch secrets that reach source control. Browser detection catches the ones that never should.

Scenario	SecureLint	GitLeaks / TruffleHog	SAST Tools
API key pasted into ChatGPT	✅ Detected	❌ Never scanned	❌ Never scanned
Secret in cloud dashboard UI	✅ Detected	❌ Never scanned	❌ Never scanned
Credential in browser DevTools	✅ Detected	❌ Never scanned	❌ Never scanned
Secret committed to git	⚠️ If opened in browser	✅ Detected	✅ Detected
Secret in environment config file	✅ If opened in browser	✅ Detected	✅ Detected
Real-time detection (no commit needed)	✅	❌	❌
Works for non-developers	✅	❌	❌

Frequently Asked Questions

What is the difference between secret detection and credential scanning?

Secret detection is the broader category — identifying any sensitive string in a digital environment. Credential scanning typically refers specifically to username/password pairs. SecureLint does both, plus API keys, tokens, private keys, and high-entropy strings.

Does SecureLint detect secrets in JavaScript or HTML source?

Yes. SecureLint scans the rendered page content, which includes values loaded by JavaScript, dynamically populated fields, and inline HTML content. It detects secrets whether they're in the visible text or in hidden form fields.

Can SecureLint detect secrets in localhost applications?

Yes. SecureLint works on all pages loaded in Chrome, including localhost, 127.0.0.1, and private network addresses. This is especially useful for developers testing local applications that load real credentials from environment files.

How does entropy analysis work?

Entropy analysis measures the randomness of a string. API keys and cryptographic secrets are typically high-entropy (very random) compared to regular text. SecureLint flags strings above a certain entropy threshold that are likely to be secrets, even if they don't match a known provider pattern.

Does secret detection work in private or incognito mode?

Secret detection works in incognito mode if you enable it in the Chrome extension settings. By default, Chrome extensions require explicit permission to run in incognito windows.

Scan your browser for secrets in real time

100+ secret patterns. Entropy analysis. 100% local. Free to start.

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