Bitwarden

Meets the B minimum (70/100) in our RFP clause.

With these headers missing, bitwarden.com is more exposed to clickjacking.

Missing 2

• Cross-Origin-Opener-Policy 0 of 5

  Cuts the link between the product's window and windows opened by, or opening, other sites.

  Without it: A page that opens the product keeps a handle on its window and can later redirect it to a look-alike sign-in or payment page (tab-nabbing) while the user thinks they are still on the real site. It is also part of the isolation browsers need to defend against Spectre-style attacks.

• Cross-Origin-Resource-Policy 0 of 5

  Tells browsers which sites may load this site's resources.

  Without it: Other sites can pull the product's responses into their own pages, which makes side-channel leaks of what a signed-in user can see easier.

Sent 7

• Content-Security-Policy 25 of 25

  default-src 'self';base-uri 'self';child-src blob:;connect-src 'self' wss: https: https://*.algolia.net https://*.algolianet.com https://insights.algolia.io https://func.bitwarden.com https://status.bitwarden.com https://us-central1-adaptive-growth.cloudfunctions.net https://pdf-convert.bitwarden.com https://aorta.clickagy.com https://hemsync.clickagy.com https://ws.zoominfo.com https://bitwarden.freshsales.io https://stats.g.doubleclick.net https://www.google-analytics.com https://api.hubapi.com https://forms.hubspot.com https://forms.hsforms.com https://hubspot-forms-static-embed.s3.amazonaws.com https://bat.bing.com https://cdn.linkedin.oribi.io https://i.clarity.ms https://scout.salesloft.com https://script.crazyegg.com https://global.ketchcdn.com/ https://cdn.ketchjs.com/ https://*.demandbase.com https://*.company-target.com https://browser-intake-us3-datadoghq.com https://*.storylane.io https://bzr.openai.com https://bzrcdn.openai.com;img-src 'self' data: https: https://*.algolia.net https://images.ctfassets.net https://res.cloudinary.com https://www.google.com https://www.google-analytics.com https://i.ytimg.com https://*.hsforms.com https://track.hubspot.com https://analytics.twitter.com https://t.co https://alb.reddit.com https://aorta.clickagy.com https://bat.bing.com https://i.vimeocdn.com https://id.rlcdn.com https://idsync.rlcdn.com https://insight.adsrvr.org https://px.ads.linkedin.com https://p.adsymptotic.com https://stags.bluekai.com https://ct.capterra.com https://*.demandbase.com https://*.company-target.com https://bzr.openai.com;font-src 'self' data: https://fonts.gstatic.com https://cdn.jsdelivr.net https://*.typekit.net;form-action https://forms.hsforms.com https://www.facebook.com;frame-ancestors https://app.contentful.com;frame-src https://app.hubspot.com https://start.bitwarden.com https://*.doubleclick.net https://boards.greenhouse.io https://*.company-target.com https://docs.google.com https://forms.hsforms.com https://player.vimeo.com https://preview.widgets.ninetailed.io/ https://us02web.zoom.us https://www.facebook.com/ https://www.googletagmanager.com https://www.youtube.com https://*.hs-sites.com https://global.ketchcdn.com https://cdn.ketchjs.com/ https://app.contentful.com https://job-boards.greenhouse.io https://hemsync.clickagy.com https://insight.adsrvr.org https://*.storylane.io;manifest-src 'self';object-src 'none';script-src 'self' 'unsafe-eval' 'unsafe-inline' blob: https://cdn.jsdelivr.net/ https://js.hs-analytics.net https://js.hs-banner.com https://js.hs-scripts.com https://js.hsadspixel.net https://js.hscollectedforms.net https://js.hsforms.net https://js.hubspot.com https://amplify.outbrain.com https://tr.outbrain.com https://wave.outbrain.com https://j.6sc.co https://tag.demandbase.com https://a.quora.com https://assets.freshsales.io https://bat.bing.com https://boards.greenhouse.io https://cdn.jsdelivr.net/npm/search-insights@2.0.4 https://cdn.pdst.fm https://global.ketchcdn.com https://cdn.ketchjs.com/ https://connect.facebook.net https://mountain.com https://*.mountain.com https://extend.vimeocdn.com https://googleads.g.doubleclick.net https://libraries.hund.io https://ml314.com https://*.ml314.com https://player.vimeo.com https://plausible.io https://script.crazyegg.com https://scout-cdn.salesloft.com https://snap.licdn.com https://static.ads-twitter.com https://static.xingcdn.com/xingtrk/index.js https://tag.clearbitscripts.com https://cdn.hubilo.com https://tags.clickagy.com https://js.usemessages.com https://ws.zoominfo.com https://www.clarity.ms https://scripts.clarity.ms https://www.googletagmanager.com https://www.google-analytics.com https://www.googleadservices.com https://www.redditstatic.com https://x.clearbitjs.com https://app.contentful.com https://tags.clickagy.com/ https://js.zi-scripts.com https://js.adsrvr.org/ https://*.demandbase.com https://*.company-target.com https://*.storylane.io https://bzrcdn.openai.com;style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https://cdn.jsdelivr.net https://libraries.hund.io https://global.ketchcdn.com https://cdn.ketchjs.com/ https://*.typekit.net;worker-src 'self' blob: https://global.ketchcdn.com https://cdn.ketchjs.com/

• Strict-Transport-Security 20 of 20

  max-age=31557600

• X-Content-Type-Options 10 of 10

  nosniff

• Frame protection 10 of 10

  SAMEORIGIN

• Referrer-Policy 10 of 10

  strict-origin-when-cross-origin

• Permissions-Policy 10 of 10

  microphone=(), camera=()

• No version disclosure 5 of 5

Checked 2026-10-07 at https://bitwarden.com/. Re-checked every 7 days. The grade covers the headers this website sends, not the product’s overall security. How the grade works.