Cookies
Last Updated: 19 May, 2026
This Cookie Policy explains how LambdaTest Inc., d/b/a TestMu (“TestMu”, “TestMu AI ”, testmuai.com, “we”, “us” and “ours”) uses cookies and similar technologies to recognize you when you visit our website testmuai.com (“Website”) and TestMu Service. We may amend this Cookie Policy from time to time to reflect changes in the law, our companies, our website, TestMu Services, our data collection, use and practices. Depending upon the type of change, we may notify you of the change by posting on this page or by email. For questions or comments about this notice or about our use of cookies, please email us at [email protected]
Cookies are small data files containing small amounts of information that are placed on your computer or mobile device when you visit a website. Cookies are widely used for proper functioning of website or for enhancement of user experience or remembering your preferences such as language settings. Cookies generally make the website easier for you to use. They may also be used to deliver advertisements that are relevant to you. Cookies are generally “first party cookies” i.e. cookies set by the website owner (in this case, TestMu) or “third party cookies” which are set by parties other than the website owner. Third party cookies are used to enable third party features or functionality on the website (e.g. interactive contents, analytics, advertising etc.).
We use cookies to recognize you when you visit website and TestMu Services, to enhance your user experience and make interactions faster and more secure and remember your preferences and give you personalize experience that is in line with your settings.
The specific types of first and third party cookies used on our Website and the purpose they perform are described below:
Strictly Necessary: Required for site security, authentication, and legal compliance. Cannot be disabled without breaking core site functionality.
Functional: Enable enhanced functionality, personalization, localization, and authentication flows. Disabling may reduce product usability.
Analytics: Help us understand how visitors interact with our website and product so we can measure usage, improve features, and prioritize fixes. Aggregated, pseudonymous data only.
Marketing / Advertising: Track user behavior across sessions to measure campaign effectiveness, attribute conversions to ads, and enable remarketing. Typically require user consent under GDPR/CCPA.
What Cookies Do We Use?
Below is a detailed inventory of cookies dropped across our properties, grouped by the context in which they are set. Each table lists the cookie name, host domain, category, purpose, the party that sets it, type (session or persistent), and expiry. Because TestMu was formerly known as LambdaTest, our account portal and related subdomains currently continue to operate on the .lambdatest.com domain while the brand transition completes — this is reflected in the Host column where applicable.
A. Marketing Website (www.testmuai.com)
Cookies set when you visit our public marketing website as an anonymous visitor.
| Cookie Name | Host | Category | Purpose | Owner | Type | Duration |
|---|---|---|---|---|---|---|
| CookieConsent | www.testmuai.com | Strictly Necessary | Stores your cookie-consent preferences (necessary, preferences, statistics, marketing). Required for GDPR/CCPA compliance so we respect your choices on subsequent visits and only fire categories you have approved. | Cookiebot (CMP) | Persistent | 1 month |
| __Secure-BUCKET | .google.com | Functional | Google-owned cookie set when a Google-hosted service (Sign-In, reCAPTCHA, embedded widgets) loads. Used internally by Google to route users to the appropriate server cluster for load balancing. | Persistent | 6 months | |
| __Secure-STRP | .google.com | Functional | Set by Google Identity Services to power the 'Sign in with Google' button or One Tap prompt. Helps Google securely manage authentication state and prevent CSRF. | Persistent | Same-day | |
| country_data | .www.testmuai.com | Functional | Stores inferred geolocation data (ISO code, calling code, country tier, country name) used to localize phone-number formatting, currency, regional pricing, and compliance banners. | TestMu | Persistent | 1 month |
| _ga | .testmuai.com | Analytics | Google Analytics 4 primary cookie. Assigns a pseudonymous client ID to distinguish unique visitors and sessions across visits. No personally identifiable information is stored. | Google Analytics | Persistent | 2 years |
| _ga_QK7VZQJBWC | .testmuai.com | Analytics | GA4 property-specific cookie for testmuai.com (Measurement ID QK7VZQJBWC). Stores session state — start timestamp, session count, engagement indicator, last-interaction timestamp. | Google Analytics | Persistent | 2 years |
| amp_4bc4dc | .testmuai.com | Analytics | Set by Amplitude (product analytics). Stores a pseudonymous device identifier used to stitch sessions and events into a coherent user journey. No PII stored. | Amplitude | Persistent | 1 year |
| _ce.s | .testmuai.com | Analytics | Main Crazy Egg cookie. Stores a unique visitor identifier and session metadata used to generate heatmaps, scrollmaps, and session recordings for UX analysis. | Crazy Egg | Persistent | 1 year |
| _ce.clock_data | .testmuai.com | Analytics | Crazy Egg clock-synchronization cookie. Stores timing offsets between the visitor's browser and Crazy Egg's servers so interaction events are correctly ordered in session recordings. | Crazy Egg | Persistent | Short-term |
| cebs | .testmuai.com | Analytics | Crazy Egg browser-session cookie. Identifies the current browsing session for heatmap and recording aggregation. Cleared when the browser is closed. | Crazy Egg | Session | Session |
| cebsp_ | .testmuai.com | Analytics | Crazy Egg browser-session-page cookie. Tracks the current page within a Crazy Egg session to correctly scope heatmap interactions. Cleared when the browser is closed. | Crazy Egg | Session | Session |
| _gcl_au | .testmuai.com | Marketing | Set by Google Tag Manager's Conversion Linker tag. Stores Google Ads click-attribution data in a first-party context so conversions can be attributed back to the originating ad campaign. | Google Ads | Persistent | 90 days |
| NID | .google.com | Marketing | Google's main cookie for personalizing ads and storing user preferences (language, results-per-page, SafeSearch). Used to show relevant ads on Google Ads/AdSense-enabled properties. | Persistent | 6 months | |
| _fbp | .testmuai.com | Marketing | Set by the Meta (Facebook) Pixel. Stores a first-party browser identifier used to attribute conversions to ads on Facebook, Instagram, or the Meta Audience Network and build remarketing audiences. | Meta / Facebook | Persistent | 90 days |
| _uetsid | .testmuai.com | Marketing | Microsoft Bing UET session ID. Tracks a visitor's session across multiple pages to attribute conversions to Bing ad campaigns and build remarketing audiences. | Microsoft Advertising | Persistent | 24 hours |
| _uetvid | .testmuai.com | Marketing | Microsoft Bing UET visitor ID. Persistent identifier across multiple sessions for long-term ad effectiveness measurement and remarketing. | Microsoft Advertising | Persistent | ~13 months |
| initial_referrer | www.testmuai.com | Marketing | First-party attribution cookie. Captures the URL (document.referrer) of the site a visitor originally came from on their first visit. Used for traffic-source attribution. | TestMu | Persistent | 1 month |
| utm | www.testmuai.com | Marketing | First-party attribution cookie. Captures the latest UTM parameters (source, medium, campaign, term, content, product) from the visitor's most recent arrival for last-touch attribution. | TestMu | Persistent | 1 year |
| utm_base | www.testmuai.com | Marketing | First-party attribution cookie. Captures the first-touch (original) UTM attribution from the visitor's very first visit. Paired with utm (last-touch) to enable both attribution models. | TestMu | Persistent | 1 year |
B. Account Portal — Non-Logged-In State
Cookies set when you visit our account portal (including the sign-in and sign-up pages) without being authenticated.
| Cookie Name | Host | Category | Purpose | Owner | Type | Duration |
|---|---|---|---|---|---|---|
| __cf_bm | .lambdatest.com | Strictly Necessary | Set by Cloudflare to distinguish legitimate human visitors from automated bots and scrapers. Helps prevent credential stuffing, scraping, and DDoS. Contains a cryptographic token validated on each request. | Cloudflare | Persistent | 30 minutes |
| CookieConsent | accounts.lambdatest.com | Strictly Necessary | Stores your cookie-consent preferences. Required for GDPR/CCPA compliance so we respect your choices and only fire approved categories. Cannot be disabled because it IS the record of consent. | Cookiebot (CMP) | Persistent | 1 month |
| __Secure-BUCKET | .google.com | Functional | Google-owned cookie set when a Google-hosted service (Sign-In, One Tap, reCAPTCHA, embedded widgets) loads. Used internally by Google for server cluster routing and load balancing. | Persistent | 6 months | |
| __Secure-STRP | .google.com | Functional | Set by Google Identity Services to power the 'Sign in with Google' button or One Tap prompt. Helps securely manage authentication state and prevent CSRF. | Persistent | Same-day | |
| _ga | .lambdatest.com | Analytics | Google Analytics 4 primary cookie. Assigns a pseudonymous client ID to distinguish unique visitors and sessions. No PII stored. | Google Analytics | Persistent | 2 years |
| _ga_ETKR49VB7Y | .lambdatest.com | Analytics | GA4 property-specific cookie (Measurement ID ETKR49VB7Y). Stores session state — start timestamp, session count, engagement indicator, last-interaction timestamp. | Google Analytics | Persistent | 2 years |
| _gat | .lambdatest.com | Analytics | Throttles the rate of requests sent to Google Analytics servers. When present (value 1), skips additional data hits within the same minute. Rate-limit flag with no identifying information. | Google Analytics | Persistent | ~1 minute |
| _gid | .lambdatest.com | Analytics | Google Analytics short-term cookie. Distinguishes unique users within a 24-hour window. Complements _ga with finer-grained short-term visitor differentiation. | Google Analytics | Persistent | 24 hours |
| amp_4bc4dc | .lambdatest.com | Analytics | Set by Amplitude (product analytics). Stores a pseudonymous device identifier used to stitch sessions and events into a coherent user journey. | Amplitude | Persistent | 1 year |
| _zitok | .accounts.lambdatest.com | Analytics | Set by Zoho (PageSense / SalesIQ) on our accounts subdomain. Stores a unique visitor token used for analytics, heatmaps, and the in-app engagement/chat widget. | Zoho | Persistent | 1 year |
| _gcl_au | .lambdatest.com | Marketing | Set by GTM's Conversion Linker tag. Stores Google Ads click-attribution data in a first-party context so conversions can be attributed back to the originating campaign. | Google Ads | Persistent | 90 days |
| NID | .google.com | Marketing | Google's main cookie for personalizing ads and storing user preferences. Used to show relevant ads on Google Ads/AdSense-enabled properties. | Persistent | 6 months | |
| _uetsid | .lambdatest.com | Marketing | Microsoft Bing UET session ID. Tracks a visitor's session across multiple pages to attribute conversions to Bing ad campaigns and build remarketing audiences. | Microsoft Advertising | Persistent | 24 hours |
| _uetvid | .lambdatest.com | Marketing | Microsoft Bing UET visitor ID. Persistent identifier across multiple sessions for long-term ad measurement and remarketing. | Microsoft Advertising | Persistent | ~13 months |
| lpv1059763 | go.lambdatest.com | Marketing | Salesforce Pardot 'Last Page View' cookie (suffix 1059763 is our Pardot account ID). Prevents duplicate page-view tracking so repeated visits aren't over-counted in Pardot analytics. | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763 (accounts) | accounts.lambdatest.com | Marketing | Pardot visitor ID on our accounts subdomain. Associates site activity with a specific prospect record for lead-nurturing and marketing-automation workflows. | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763 (go) | go.lambdatest.com | Marketing | Same Pardot visitor ID on our marketing subdomain. Stitches together a prospect's activity across the marketing funnel (emails, landing pages, form submissions). | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763-hash (go) | go.lambdatest.com | Marketing | Signed/hashed companion to visitor_id1059763. Pardot validates the hash to ensure the visitor ID cookie has not been tampered with client-side. | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763-hash (accounts) | accounts.lambdatest.com | Marketing | Hashed integrity cookie paired with visitor_id1059763 on the accounts subdomain. Prevents spoofed prospect-activity records by validating the ID has not been modified. | Salesforce Pardot | Persistent | 1 year |
| utm | .lambdatest.com | Marketing | First-party attribution cookie. Captures the latest UTM parameters from the visitor's most recent arrival for last-touch attribution in marketing reporting. | TestMu | Persistent | 1 year |
| utm_base | .lambdatest.com | Marketing | First-party attribution cookie. Captures the first-touch (original) UTM attribution on the visitor's very first visit. Paired with utm (last-touch) for both attribution models. | TestMu | Persistent | 1 year |
C. Account Portal — Logged-In (Authenticated) State
Cookies set once you are signed into the TestMu account portal. Includes authentication, MFA, and user-scoped product cookies in addition to the analytics and marketing cookies listed above.
| Cookie Name | Host | Category | Purpose | Owner | Type | Duration |
|---|---|---|---|---|---|---|
| __cf_bm | .lambdatest.com | Strictly Necessary | Set by Cloudflare to distinguish legitimate visitors from automated bots. Helps prevent credential stuffing, scraping, and DDoS. Contains a cryptographic token validated on each request. | Cloudflare | Persistent | 30 minutes |
| accessToken | .lambdatest.com | Strictly Necessary | Our own authentication cookie. Contains a JSON Web Token (JWT) that authenticates the signed-in user to our backend services on each request. HttpOnly flag protects against XSS. | TestMu | Persistent | 1 month |
| authentic_mfa_browser | .lambdatest.com | Strictly Necessary | Marks the current browser as having completed Multi-Factor Authentication. When true, the user is not prompted for MFA again on this browser within the cookie's validity window. | TestMu | Persistent | Short-term |
| user_id | .lambdatest.com | Strictly Necessary | Stores the internal user ID of the signed-in user. Used by our frontend and backend to scope API requests and personalized content to the current user. | TestMu | Persistent | 1 month |
| user_uuid | .lambdatest.com | Strictly Necessary | Globally unique identifier (UUID) for the user account. Used with user_id for internal identification across our microservices. Needed for authenticated product flows. | TestMu | Persistent | 1 month |
| CookieConsent | accounts.lambdatest.com | Strictly Necessary | Stores your cookie-consent preferences. Required for GDPR/CCPA compliance. Cannot be disabled because it IS the record of consent. | Cookiebot (CMP) | Persistent | 1 year |
| __Secure-BUCKET | .google.com | Functional | Google-owned cookie set when a Google-hosted service (Sign-In, One Tap, reCAPTCHA, embedded widgets) loads. Used internally by Google for server cluster routing. | Persistent | 6 months | |
| lidc | .linkedin.com | Functional | Set by LinkedIn to facilitate data-center selection and route LinkedIn Insight Tag requests to the optimal server cluster. Performance/load-balancing cookie controlled by LinkedIn. | Persistent | 24 hours | |
| loggedInMethod | .lambdatest.com | Functional | Records how the current user signed in (e.g. normal, google, github, sso). Used to show the correct re-auth prompt and remember the preferred login method for better UX. | TestMu | Persistent | Short-term |
| reset_zoho_chat | .lambdatest.com | Functional | Set by Zoho SalesIQ (our live-chat / customer-support widget). Short-lived flag telling the SalesIQ widget to reset the chat session (e.g. after logout) so the next chat opens fresh. | Zoho SalesIQ | Persistent | Short-term |
| user_region | .lambdatest.com | Functional | Stores the user's data region (e.g. us, eu, in) so the frontend routes API calls to the correct regional backend cluster. Supports our data-residency architecture. | TestMu | Persistent | 1 month |
| _ga | .lambdatest.com | Analytics | Google Analytics 4 primary cookie. Assigns a pseudonymous client ID to distinguish unique users and sessions. No PII stored. | Google Analytics | Persistent | 2 years |
| _ga_ETKR49VB7Y | .lambdatest.com | Analytics | GA4 property-specific cookie (Measurement ID ETKR49VB7Y). Stores session state — start timestamp, session count, engagement indicator, last-interaction timestamp. | Google Analytics | Persistent | 2 years |
| _gid | .lambdatest.com | Analytics | Google Analytics short-term cookie. Distinguishes unique users within a 24-hour window. Complements _ga with short-term visitor differentiation. | Google Analytics | Persistent | 24 hours |
| amp_4bc4dc | .lambdatest.com | Analytics | Set by Amplitude (product analytics). Stores a pseudonymous device/user identifier used to stitch sessions and events into a coherent user journey. | Amplitude | Persistent | 1 year |
| _zitok | .accounts.lambdatest.com | Analytics | Set by Zoho on the authenticated accounts subdomain. Tracks logged-in user behavior for product analytics, heatmaps, and in-app engagement/chat. Secure first-party session tracker. | Zoho | Persistent | 1 year |
| _gcl_au | .lambdatest.com | Marketing | Set by GTM's Conversion Linker tag. Stores Google Ads click-attribution data in a first-party context so conversions can be attributed back to the originating campaign. | Google Ads | Persistent | 90 days |
| NID | .google.com | Marketing | Google's main cookie for personalizing ads and storing user preferences. Used to show relevant ads on Google Ads/AdSense-enabled properties. | Persistent | 6 months | |
| test_cookie | .doubleclick.net | Marketing | Set by DoubleClick (Google Marketing Platform) with the fixed value CheckForPermission. Checks whether the browser accepts third-party cookies before serving tracking/retargeting cookies. | Google DoubleClick | Persistent | ~15 minutes |
| _uetsid | .lambdatest.com | Marketing | Microsoft Bing UET session ID. Tracks a visitor's session across multiple pages to attribute conversions to Bing ad campaigns and build remarketing audiences. | Microsoft Advertising | Persistent | 24 hours |
| _uetvid | .lambdatest.com | Marketing | Microsoft Bing UET visitor ID. Persistent identifier across sessions for long-term ad measurement and remarketing. | Microsoft Advertising | Persistent | ~13 months |
| MR | .bat.bing.com | Marketing | Set by Microsoft's Bing Ads. Indicates whether the MUID cookie should be refreshed, enabling up-to-date ad targeting and conversion measurement across Microsoft's ad network. | Microsoft Advertising | Persistent | Short-term |
| MUID | .bing.com | Marketing | Microsoft's User Identifier used across Microsoft web properties (Bing, MSN) and Microsoft Advertising. Enables cross-site ad personalization, frequency capping, and conversion attribution. | Microsoft | Persistent | ~13 months |
| bcookie | .linkedin.com | Marketing | Set by the LinkedIn Insight Tag (used for LinkedIn Ads conversion tracking and remarketing). Stores a unique browser identifier used to associate ad impressions/clicks with conversions. | Persistent | 1 year | |
| li_sugr | .linkedin.com | Marketing | Set by LinkedIn's Insight Tag. Stores a short-lived probabilistic browser identifier ('sugr') used to match website visitors to LinkedIn members for ad-attribution and audience-building. | Persistent | 90 days | |
| _cfuvid | .zoominfo.com | Marketing | Set by ZoomInfo's WebSights script (served via Cloudflare). Used to identify anonymous business visitors by matching IP/company data and bind rate-limiting decisions to a unique visitor ID. | ZoomInfo (via Cloudflare) | Session | Session |
| lpv1059763 | go.lambdatest.com | Marketing | Salesforce Pardot 'Last Page View' cookie (suffix 1059763 is our Pardot account ID). Prevents duplicate page-view tracking in Pardot analytics. | Salesforce Pardot | Persistent | Short-term |
| visitor_id1059763 (accounts) | accounts.lambdatest.com | Marketing | Pardot visitor ID on our accounts subdomain. Associates site activity with a specific prospect record for lead-nurturing and marketing-automation workflows. | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763 (go) | go.lambdatest.com | Marketing | Same Pardot visitor ID on our marketing subdomain. Stitches together a prospect's activity across the marketing funnel. | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763-hash (go) | go.lambdatest.com | Marketing | Signed/hashed companion to visitor_id1059763. Pardot validates the hash to prevent tampering of prospect-activity records. | Salesforce Pardot | Persistent | 1 year |
| visitor_id1059763-hash (accounts) | accounts.lambdatest.com | Marketing | Hashed integrity cookie paired with visitor_id1059763 on the accounts subdomain. Ensures the Pardot visitor identifier has not been modified client-side. | Salesforce Pardot | Persistent | 1 year |
| utm | .lambdatest.com | Marketing | First-party attribution cookie. Captures the latest UTM parameters from the visitor's most recent arrival for last-touch attribution. | TestMu | Persistent | 1 year |
| utm_base | .lambdatest.com | Marketing | First-party attribution cookie. Captures the first-touch (original) UTM attribution from the visitor's very first visit. Paired with utm for both attribution models. | TestMu | Persistent | 1 year |
You have the right to decide whether to accept or reject cookies. You can exercise your preferences with some third-party cookies by clicking on the appropriate opt-out links.
Cookies set by TestMu and its service providers expire at different intervals depending on their purpose — from short-lived session cookies that are cleared when you close your browser, to persistent cookies that last from a few minutes up to approximately two years. The specific expiry for each cookie is listed in the tables above.
You can set or amend your web browser controls to accept or refuse cookies. If you choose to reject cookies, you may still use our website, though your access to some functionality and areas of our website may be restricted. In addition, most advertising networks offer you a way to opt out of targeted advertising. If you would like to find out more information, please visit www.aboutads.info/choices or www.youronlinechoices.com. For further information on cookies, including how to see what cookies have been set on your device and how to manage and delete them, visit www.allaboutcookies.org.